Not sure I agree with that.
I normally work inside out - adding small byte sized chunks of functionality until the whole is achieved. Sometimes (like today) I need to work outside in - and guess what - there is a printout of a big block of code on my desk just so that I can track every aspect of what is going on while I rewrite a key routine. It has to be many months since I did something like that but right now it is exactly the right way to tackle a problem.
