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Yom Kippur

Day of atonement, a.k.a. Yom HaDin, Yom HaKippurim; the second of the Days of Awe — Yomim Noraim or Yomim Noroim

The Fifth Force – Epilog

This post is a continuation and the conclusion of the previous post, THE FIFTH FORCE. Aside from the connection with the last week’s Torah portion, Vayelech, there is also connection with and Aseret Yimei Teshuvah (Ten Days of Repentance) and Yom Kippur. When it comes to physics of fundamental forces, there are two unresolved problems: (i) unification of gravity with the other three fundamental forces (electromagnetic, strong and weak); and (ii) discovery of the fifth force. Both problems are related to repentance (teshuvah), which comes to sharp focus on the Ten Days of Repentance (Aseret Yimei Teshuvah) and Yom Kippur. Firstly, the word “teshuva” doesn’t mean “repentance”, it literally means “return” In Kabbalah tradition, the word TeShuVaH, is read as “ToShuV H” – return of the letter “heh”. It is talking about the [...]

Yom Kippur – Disentangling the Entangled

When God created the first humans, Adam and Eve (Chavah), He created them as one. And God created man in His own image, in the image of God created He him; male and female created He them. (Gen. 1:27) Actually, as Midrash Rabbah (Gen. VIII:1) explains, Adam and Eve were created as one being as Siamese twins—attached by their side.  When the story of the creation of Adam is repeated in the next chapter, it seems as a very different story: And the Lord God caused a deep sleep to fall upon the man, and he slept; and He took one of his ribs, and closed up the place with flesh instead thereof. And the rib, which the Lord God had taken from the man, made He a woman, and brought her unto the [...]

Forty Two Journeys to the Answer to the Ultimate Question of Life, the Universe, and Everything

These are the journeys of the children of Israel… (Numbers 33:1) When G-d brought the Jews out from Egypt, He brought them out with the mystery of the 42-letter name, just as He created heaven and earth… (Zohar Chadash) The forty-two "stations" from Egypt to the Promised Land are replayed in the life of every individual Jew, as his soul journeys from its descent to earth at birth to its return to its Source. (Rabbi Israel Baal Shem Tov) Torah portion Massei (Num. 33-35) recalls forty-two journeys of the Children of Israel in the Sinai desert after the Exodus from Egypt.  This is not the first time the concept of forty-two journeys appears in the Torah.  Commenting on the Biblical verse, “And God said, ‘Behold, I Will Cause to Rain Bread from Heaven for You,’” (Ex. 25:5) the Midrash [...]

From Purim to Passover

The Shulchan Aruch – the Code of Jewish Law – states that 30 days before Pesach (Passover) one needs to start learning the laws of Pesach. The simple meaning of this directive is clear – the laws are many and complicated and there is a lot to learn – so one needs to start early. There may be a deeper meaning in this, however. Let us recall that Pesach and Purim are exactly 30 days apart. To start learning about Pesach 30 days before, means to start learning about Pesach on Purim. Or, perhaps, the message is that from Purim we can learn about Pesach. The word Purim means “lot.” The story of Purim is about throwing lots. Evil Haman threw one lot to choose a month for the pogrom against Jews of [...]

Saved by Randomness

In his book, “Fooled by Randomness: The Hidden Role of Chance in Life and in the Markets,” Nissim Taleb argues that the human brain abhors randomness. Our brain is hard-wired to see patterns everywhere. We need to make sense of our surroundings and events around us. Sometimes, an ability to discern a pattern is very useful but, other times, we simply fool ourselves into seeing a pattern where there is none. We just can't deal with randomness. Perhaps, this is one of the reasons why quantum physics—random at its core—is so hard to understand. It is difficult for us to accept that at the core of our reality, there is nothing but randomness. Even Einstein, himself one of the founding fathers of quantum physics, could not accept it. He famously said to Neils Bohr, “God does [...]

Tale of Entangled Goats

In the last Torah portion, Metzorah, we learned about two entangled birds. This week, we learn about two entangled goats. I don’t know if these goats studied quantum mechanics but they can sure teach us a thing or two about quantum entanglement. Entanglement is one of the mysteries of quantum mechanics. On a macro level, entanglement is easy to understand. Imagine a coin sawn into two halves along the plane parallel to the face of the coin. One-half has only heads and the other only tails. Let’s send each of these halves to two people, Shimon and Reuven. If Shimon gets the half with the heads, he knows immediately that Reuven got the half with the tails even if Reuven didn’t yet open the envelope. In other words, the states (heads or tails) [...]