How did Leonard Susskind become physicist?

How do Stephen Hawking and Leonard Susskind disagree?

Hawking proposed that information is lost in black holes, and not preserved in Hawking radiation. Susskind disagreed, arguing that Hawking's conclusions violated one of the most basic scientific laws of the universe, the conservation of information.

Is Leonard Susskind a genius?

Susskind describes him as being as much a showman as a genius: "He is a physically tiny man - I doubt he weights 100 pounds - but his small body contains a prodigious intelligence and an equally outsized ego." Susskind's irritation with Hawking derives from their opposite stands on the long-running black hole debate.Aug 8, 2008