The Edge answers, edited to tweets. Original source: http://edge.org/annual-question/q2013 http://edge.org/annual-question/q2013 Edit: Not quite blogspam becau

The Edge answers, edited to tweets. Original source: http://edge.org/annual-question/q2013 http://edge.org/annual-question/q2013 Edit: Not quite blogspam because it is a useful summary that is not available on the original site. It would added more value with links to the answers.