40 or 50 Makkos
There is a dispute in the Haggadah about how to count the plagues. Rabbi Yosi simply says there were 10 plagues in Egypt, and the equivalent of 50 at the sea. Just focusing on...
Category: Machashavah
Rav and Shemuel on Redemption
The mishnah in Pesachim requires that in telling of the Pesach story at the seder, “we begin with degradation, and end with glory.” There is a debate between Rav and Shemuel over what this...
Why are bricks red?
One way to explain the color of the brick would involve discussing the quantum mechanics of the atoms bricks are made of, (and this is where most readers eyes gloss over and skim to...
Interpretations of Probability
At “Casting Lots” I tried to use the relationship between the field of statistics and Divine Providence as a means of looking at the verse “Hipil pur hu hagoral — he cast a pur,...
Casting Lots
Regardless of what one believes about Creation and the origin of the species, we have evolution since then. In order to even entertain the possibility of evolution as the origin of the species, one...
Midgets on the Shoulders of Giants
Someone recently (when I first wrote an earlier version of this post, Feb 2007) asked me about nisqatnu hadoros, the decline over time from one generation to the next. How is this possible, given...
A Physics Metaphor for Coming to Terms with Theodicy
As I’ve mentioned in the past, Aristotle believed that motion was caused by an intellect imparting impetus to an object, which then moved until the impetus ran out. Newton replaced this model of physics...
He Should Inspect His Deeds
אמר רבא ואיתימא רב חסדא: אם רואה אדם שיסורין באין עליו, יפשפש במעשיו. שנא’ (איכה ג): נַחְפְּשָׂה דְרָכֵינוּ וְנַחְקֹרָה, וְנָשׁוּבָה עַד ה’. פשפש ולא מצא, יתלה בבטול תורה. שנאמר (תהילים צד): אשְׁרֵי הַגֶּבֶר אֲשֶׁר...
Any Torah Which Has No Ancestral Home
Certain mitzvos must be done on a specific day, such as the beris milah of a boy who is healthy on the 8th day, or the Qorban Pesach. In these cases, the mitzvah overrides...
Aristotle, Science and Halakhah
ר’ יצחק בי רבי אלעזר שאל זרק מרשות היחיד לרשות הרבים ונזכר עד שהוא ברשות הרבים. על דעתיה דר’ עקיבה יעשה כמי שנחה בר”ה ויהא חייב שתים. א”ר חונה לא חייב ר’ עקיבה אלא...