Yes, sevenfold, because that is all it takes to be successful at making paper planes. Boredom (or ingenuity) + a 2 dimensional square = an all out aerial assault (and a ton of fun). So to sum up my master equation of success:
B(i)+2=A(FUN)
In keeping with the spirit of paper planes, listen to this song, it will encourage you in your aeronautical engineering endeavors.
The Dragon is a fierce opponent to anyone who dares challenge it. It ruthlessly scans the skies leaving other planes in its wake. This design is intended only for a true master of aeronautic engineering. Do you think you have what it takes?
Expand your expertise and learn how to make a paper helicopter! Impress friends and family with this stunning feet of two dimensional engineering!
Learn to make the ultra-sleek and precise rapier. I would rate this plane at a 2/5 on the difficulty level. This is a good plane for beginners and experts alike.