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Tag: Humanities

How Does Science Make Us Fall in Love?

From ancient spells to smelling like other animals, the lengths we go to for love have always been remarkable.

Are you the sort of person who plans their Valentine’s Day weeks or months in advance with their partner, or the sort who wakes up on February 14th and scrambles up a plan? Either way, It’s hard to imagine that you’ve never heard of this holiday before, which started out as a Christian religious celebration of Saint Valentinus and morphed into the world’s international Day of Love celebration.

But of course, love isn’t a modern invention, and while a major holiday to celebrate being in a relationship didn’t always exist in every culture, the desire to make the people we love pay attention to us and return our affections has always been part of humanity. In fact, according to Prof. Gideon Bohak of the Department of Jewish Philosophy and the Talmud at The Lester and Sally Entin Faculty of Humanities, people were creating love spells 1,500 years ago that are still, amazingly, in use today.

I Put A Spell On You

Prof. Bohak studies ancient Jewish magic and sorcery and claims that “the relationship between love and magic is ancient, and Jewish magic has a lot to say about relationships between two individuals. For example, archeological digs at the ruins of Rimon, next to Kibbutz Lahav, uncovered pottery pieces with an inscription adjuring six angels to set R.’s heart on fire so she would fall in love with A” (unfortunately, the names of R. and A. were not fully preserved).

But not only were people trying to get their crush to notice them back then, according to Prof. Bohak: “while these pieces of pottery were created in the 5th or 6th century CE, they were based on a “recipe” that continued to be in use by people who engage in “practical Kabbalah” until the modern era. These pieces of clay and the recipe itself are evidence of the continuation of Jewish magic from ancient times until this very day”.

The Scent of Passion

Thinking of getting that special someone a bottle of perfume to show your love? It turns out that smell is a means by which humans, like other animals, can manipulate those around them. Prof. Mel Rosenberg from the Department for Human Molecular Genetics and Biochemistry at the Sackler Faculty of Medicine studies body chemistry, pheromones and our reactions to body odor.

“Why are we attracted to the smell of flowers, which are nothing more than a kind of plant? I don’t know”, Prof. Rosenberg says. “But it’s interesting that we don’t just like those flowery smells, but also the smells of certain animals. For example, there are the musk deer, whose genitals were used to create a pleasant smell that was considered attractive to humans. Today hunting the musk deer is illegal, of course, but we produce the same smell synthetically, in perfumes”.

“Why are we willing to pay so much money for a tiny bottle of perfume? Because perfume ‘creates a great lie’. Each one of us has a unique odor. If we don’t like the smell of a person, then it hurts the relationship. On the contrary, if we find a potential mate’s odor compatible then this has a positive effect on the attraction. Perfume lets us fool our partner. Instead of smelling us, they smell Coco Chanel or Tommy Hilfiger. And then, before you know it, you’re married before the truth comes out”.

It’s likely that most people already get a real sense of their partner’s scent before committing to marriage, Yet Professor Rosenberg’s insight suggests that this act may hold a similar significance to a modern-day enchantment.

Have you ever thought of casting a magic love spell on someone? Or is the kind of “deception” that comes in a small, fancy bottle enough for you? Whatever the case, it’s clear that Valentine’s Day is here to stay, since us humans aren’t giving up on romancing any time soon.

Unearthing Ancient Intelligence

Early humans in Israel’s Hula Valley invested in systematic procurement of raw materials hundreds of thousands of years ago – much earlier than previously assumed.

A new study from Tel Aviv University and Tel-Hai College solves an old mystery: Where did early humans in the Hula Valley, in northern Israel, get flint to make the prehistoric tools known as hand axes? The researchers applied advanced methods of chemical analysis and AI to identify the geochemical fingerprints of hand axes from the Hula Valley’s oldest prehistoric sites, Ma’ayan Barukh and Gesher Benot Ya’aqov. Their findings indicate that the raw material came from exposures of high-quality flint in the Dishon Plateau, about 20km to the west, and hundreds of meters above the Hula Valley. The researchers: “Our findings indicate that these early humans had high social and cognitive abilities: they were familiar with their surroundings, knew the available resources, and made great efforts to procure the high-quality raw materials they needed. For this purpose, they planned and carried out long journeys, and transferred this essential knowledge to subsequent generations.”

 

“Our findings indicate that early humans were highly capable: they planned and implemented complex strategies and passed on essential information from one generation to the next.” – The researchers

 

Early Humans’ Versatile “Swiss Army Knife”

The study was led by Dr. Meir Finkel of the Department of Archaeology and Ancient Near East Cultures, Tel Aviv University and Prof. Gonen Sharon of the MA Program in Galilee Studies, Tel-Hai College, in collaboration with Prof. Erez Ben-Yosef, Tel Aviv University, Dr. Oded Bar and Dr. Yoav Ben Dor, the Geological Survey of Israel, and Ofir Tirosh, the Hebrew University. The paper was published in Geoarchaeology.

Dr. Finkel: “The Hula Valley, located along the Dead Sea Transform Rift, is well known for its many prehistoric sites, the oldest of which date back to 750,000 years before present (YBP). The valley offered early humans rich sources of water, vegetation, and game, right on the northward migration route from Africa – the Great African Rift Valley. These early inhabitants left behind them many artifacts, including thousands of hand axes – flint stones chiseled to fit the human hand. One of the earliest and most universal tools produced by humans, the hand axe may have served as a multipurpose ‘penknife’ for many different tasks, from cutting game meat to digging for water and extracting roots. It was used in many different parts of the Old World, in Africa, Asia, and Europe, for about 1.5 million years.”

 

“One of the earliest and most universal tools produced by humans, the hand axe may have served as a multipurpose ‘penknife’ for many different tasks, from cutting game meat to digging for water and extracting roots.” –  Dr. Meir Finkel

 

In the present study the researchers looked for the source of the raw material used to produce thousands of hand axes found at two prehistoric sites in the Hula Valley: Gesher Benot Ya’aqov, dated to 750,000 YBP and Ma’ayan Barukh, dated to 500,000 YBP, both Acheulian.  Prof. Sharon: “Approximately 3,500 hand axes were found scattered on the ground at Ma’ayan Barukh, and several thousands more were discovered at Gesher Benot Ya’aqov. The average hand axe, a little over 10cm long and weighing about 200g, was produced by reducing stones that are five times larger – at least 1kg of raw material. In other words, to make the 3,500 hand axes found at Ma’ayan Barukh alone, early humans needed 3.5 tons of flint. But where did they obtain such a huge amount of flint? Many researchers have tried to answer this question, but our study was the first to use innovative 21st century technologies: advanced chemical analysis and an AI algorithm developed specifically for this purpose.”

 

The Gesher Benot Ya’aqov area

 

20 Kilometer Hikes Across Diverse Terrain

The researchers took samples from 20 hand axes – 10 from Gesher Benot Ya’aqov and 10 from Ma’ayan Barukh, ground them into powder and dissolved the powder in acid in a clean lab. For each sample they measured the concentration of approximately 40 chemical elements, using an ICP-MS (inductively coupled plasma mass spectrometer), a state-of-the-art device that accurately measures the concentration of dozens of elements, down to a resolution of one particle per billion.

In addition, in order to locate possible flint sources available to the Hula Valley’s prehistoric inhabitants, the researchers conducted a field survey covering flint exposures in the Safed Mountains, Ramim Ridge, Golan Heights, and Dishon Plateau, as well as cobbles from streams draining into the Hula Valley: the Jordan, Ayun, Dishon, Rosh Pina, and Mahanayeem. This methodical survey was combined with a comprehensive literature review led by Dr. Bar of the Geological Survey of Israel. Flint samples collected from all potential sources were then analyzed using ICP-MS technology to enable comparison with the hand axes. A novel computational approach specially adapted by Dr. Ben Dor of the Geological Survey of Israel was used for this comparison.  

Dr. Ben Dor: “The complex process, from collecting and preparing the samples to the chemical analysis, produced a very large amount of data for each sample. To enable optimal matching between data from the archaeological artifacts and data from the flint exposures, we developed a dedicated algorithm based on several computational steps, alongside machine learning models. Thus, we were able to classify the archaeological artifacts according to the database derived from the geological samples.”

 

 

“To procure suitable raw materials for producing their vital hand axes, [humans living in the Hula Valley hundreds of thousands of years ago] planned and carried out 20km hikes that included an ascent from 70 to 800 meters above sea level.” Prof. Erez Ben-Yosef

 

 

Dr. Finkel: “Through the computational process we discovered that all 20 archaeological artifacts were made of flint from a single source: the Dishon Plateau’s flint exposures dating back to the Eocene geological epoch, about 20km west of the Gesher Benot Ya’aqov and Ma’ayan Barukh sites. At the Dishon Plateau we also found a prehistoric flint extraction and reduction complex, indicating that the place served as a flint source for hundreds of thousands of years. In addition, we demonstrated that cobbles from streams draining into the Hula Valley were too small to be used as raw material for hand axes, ruling out this possibility.”

Prof. Ben-Yosef: “Our findings clearly indicate that humans living in the Hula Valley hundreds of thousands of years ago, probably hominids of the homo erectus species, possessed high cognitive and social capabilities. To procure suitable raw materials for producing their vital hand axes, they planned and carried out 20km hikes that included an ascent from 70 to 800 meters above sea level. Moreover, they passed on this important knowledge from one generation to the next, over many millennia. All these suggest a high level of sophistication and ability, which modern researchers do not usually attribute to prehistoric humans from such an early period.”

 

From left: Dr. Meir Finkel and Prof. Erez Ben Yosef

Empowering Israeli-Arab Students in Humanities

Inauguration of the Cohn Program for Israeli-Arab Inclusion in the Humanities at Tel Aviv University.

The Cohn Family in collaboration with The Lester and Sally Entin Faculty of Humanities and the Commission for Equity, Diversity and Community at Tel Aviv University inaugurated the Cohn Program for Israeli-Arab inclusion in the Humanities during the University’s annual Board of Governors Meeting this week. The Cohn Family has supported the Cohn Institute for the History and Philosophy of Science and Ideas along with individual departments in the Humanities at TAU for decades. The current program is aimed at centralizing and expanding the existing efforts to attract Arab students to enroll in the Humanities at TAU.

As part of the 2023 Board of Governors meeting at TAU, Dan Cohn, the Entin Faculty of Humanities and the Commission for Equity, Diversity and Community are holding a study tour in Lod, a mixed Jewish-Arab town. The tour will focus on The Lowy International School’s Gap Year Program and the archeological excavations in Lod, which will be presented by Prof. Yuval Gadot, Head of TAU’s Jacob M. Alkow Department of Archaeology and Ancient Near Eastern Cultures.

 

WATCH: The inauguration ceremony of the Cohn Program for Israeli-Arab Inclusion in the Humanities at Tel Aviv University

 

Prof. Neta Ziv, TAU Vice President for Equity, Diversity and Community: “Tel Aviv University sees great importance in promoting equity and diversity on its campus. I would like to thank the Cohn Family for their generous gift and the decision to centralize the efforts to promote equity in the Humanities under a unified program. I believe that such a program can help to increase the opportunities for Arab students in Humanities.”

Dan Cohn: “My family has supported the study of the Humanities at TAU for almost half a century. While STEM subjects have attracted substantial support from funders, it has been more difficult to attract that funding in the Humanities. In addition, Arab students have, for a number of reasons – language, role models and critical mass – gravitated to the STEM world. For some time, in initiatives sponsored in specific departments at TAU, efforts have been made to attract Arab students to study Humanities at TAU, to help fill certain gaps in their educational background (e.g., Hebrew), facilitate the creation of a sense of community and open opportunities for graduate fellowships. With the arrival of President [Ariel] Porat and others, the opportunity has been presented to centralize and expand these efforts under the direction of the President and the Vice President of Diversity, Equity and Community. By providing this opportunity at TAU, my family can make a contribution to increasing equity in Israeli society.”

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