He is a former competitive Magic: The Gathering player, and was CEO of MetaMed, a defunct medical research analysis firm.

[citation needed] Mowshowitz is known for having created innovative and sometimes game-breaking decks TurboZvi and My Fires.

[9] Mowshowitz was also an avid internet writer on gaming, previously with The Dojo, Mindripper, Brainburst, StarCityGames, and then for the official Magic website MagicTheGathering.com.

[citation needed] Last updated: 12 May 2013Source: Wizards.com Since then has focused more on writing for his newsletter, LessWrong and his blog, all under the name "Don't Worry about the Vase".

Mowshowitz is an alumnus of Columbia University and holds a bachelor's degree in mathematics.