Home/Tag: random

Cosmological Problem of Initial Conditions and the Universe of Tohu

Now the earth was unformed and void…Genesis 1:2 We have a big problem in cosmology. It is a problem of initial conditions.[1] However, before we can explain this problem, we need to review some basic concepts of thermodynamics. Thermodynamics developed by Boltzmann and others[2] described the behavior of gases and liquids and the transfer of heat. A key concept in thermodynamics is entropy. Entropy is a measure of disorder, of chaos. The second law of thermodynamics states that in an isolated system, entropy always increases with time. The second law of thermodynamics is the reason behind universal decay. And entropy is the measure of the decay.[3] Shining stars produce entropy. Stars collapsing into black holes produce entropy. Evaporating black holes produce entropy.[4] The entropy of the universe is increasing.[5] Let us assume that now, [...]

Purim: Celebrating Randomness

The story of Purim, which we read in the Book of Esther, is a story about a righteous Jewish leader who held fast to his principles refusing to bow down to a rabid anti-Semite. It’s a story about a courageous Jewish queen, Esther, who saved her people risking her life. And yet, this holiday is not called by the name of Mordechai or Esther, it  is called Purim, because, as the Book of Esther informs us: For Haman the son of Hammedatha the Agagite, the adversary of all the Jews, had devised to destroy the Jews, and he cast the pur—that is the lot—to terrify them and destroy them… Therefore, they called these days Purim after the name pur. (Book of Esther, 9:24,26) This is odd because the casting of the lot (pur) [...]

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 [...]




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