Is Mathematics Invented or Discovered? (Closer to Truth)

# automatic playing for the 4 videos (click the up-left corner for the list)

source: Closer To Truth    上次更新20160404

Steven Weinberg - Is Mathematics Invented or Discovered? 8:42
Roger Penrose - Is Mathematics Invented or Discovered? 4:15
Stephen Wolfram - Is Mathematics Invented or Discovered 4:17
Stephen Wolfram - Is Mathematics Invented or Discovered? 10:09