Stephen Hawking’s latest popular work (The Grand Design, written with physicist and author Leonard Mlodinow) seeks to answer questions that many have asked:
• Why is there something, rather than nothing?
• Why do we exist?
Hawking and Mlodinow (H&M) also pose a question which potentially answers the first two:
• Why this particular set of laws and not some other?
The answer, say H&M, is to be found in M-theory.