Building software implies various stages of planning, preparation and execution that vary in kind and degree depending on what's being built. [...]
Building a four-foot tower requires a steady hand, a level surface, and 10 undamaged beer cans. Building a tower 100 times that size doesn't merely require 100 times as many beer cans.

Code Complete (ed. Pearson Education, 2004) - ISBN: 9780735636972