Why Order Matters on America’s Got Talent

One of Pure America’s Got Talent readers, Jason, did a nice breakdown of the order that acts performed and which acts made it through to the semifinals:
#1: None of the five acts have been in the top 5.
#2: 2 of 5 have advanced to the semifinals.
#3: 1 of 5 in top 5, none in semifinals.
#4: 1 of 5 in top 5, none in semifinals.
#5: None of the five acts have been in the top 5.
#6: 2 of 5 have advanced to the semifinals.
#7: 1 of 5 have advanced to the semifinals.
#8: 1 of 5 in top 5, none in semifinals.
#9: 4 of 5 in top 5, 2 of 5 in semifinals.
#10: 4 of 5 have advanced to the semifinals.
#11: 5 of 5 have advanced to the semifinals.
#12: 4 of 5 have advanced to the semifinals.

Definitely shows a clear bias to the final acts making it through on America’s Got Talent. Is that because we have short term memories? Is it because the producers save the best acts for the end of the show? I’m guessing it’s both. What do you think?