学术上这叫publication bias:

Only those studies with significant possitive result get published.

所有跟帖： 

• survivorship bias - whose who failed will not be here posting -njrookie- ♂ (0 bytes) () 08/30/2013 postreply 08:27:07

• both are valid -万枫- ♂ (0 bytes) () 08/30/2013 postreply 08:30:07