Analysis without numbers is only an opinion.
There is never a single right solution. There are always multiple wrong ones, though.
A bad design with a good presentation is doomed eventually. A good design with a bad presentation is doomed immediately. （PPT的重要性。。。）
(Larrabee's Law) Half of everything you hear in a classroom is crap. Education is figuring out which half is which.
from Akin's Laws of Spacecraft Design