Dr. William Gewirtz has had a life-long fascination with some of sugyot having greater mathematical or scientific content - zemanim, kinnim, shiurim, kav haTa'arikh, kiddush haKhodesh al pi re'eah and kheshbon, Yom Tov sheni, birchat haKhamah, trop , etc. A former CTO of AT&T Business, he received a Ph.D. in mathematical logic from the Courant Institute and is a practicing consultant to a number of high-tech companies and investors.
Speaker's Resources
The Changing Nature of Time in Halakha (Part 4) - Is the Existence of a Dateline a Logical or Halakhic Necessity?
Dr. William Gewirtz
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The Changing Nature of Time in Halakha (Part 3) - When Satmar Censored the Ḥatam Sofer
Dr. William Gewirtz
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The Changing Nature of Time in Halakha (Part 2) - The Scientific Basis for the Fixed Jewish Calendar Part 2
Dr. William Gewirtz
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The Changing Nature of Time in Halakha (Part 1) - The Scientific Basis for the Fixed Jewish Calendar Part 1
Dr. William Gewirtz
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Time Controversies in Jewish Law: The reactions to the challenges to the opinion of Rabbeinu Tam
Dr. William Gewirtz
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Time Controversies in Jewish Law: How geonim and rishonim read some primary texts informed by observation.
Dr. William Gewirtz
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Time Controversies in Jewish Law: The various halakhic times of the day - disputes by the hour!
Dr. William Gewirtz
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