Interesting question but part of them problem is like this: Crypto Guy 1: That system would take about three weeks to implement. Crypto Guy 2: That system wou

Interesting question but part of them problem is like this: Crypto Guy 1: That system would take about three weeks to implement. Crypto Guy 2: That system would take about three months to implement. Who do you hire? You have a number of scenarios. 1 could have a set of tools that are trusted and he has experience and knows exactly. And 2 doesn't have a clue and needs a month to get up on speed with crypto code. But the reverse scenario is applicable as well. You can't be sure if guy 1 is just a fast coder that hacks together some algorithms from various sources and 2 knows exactly what is needed to from his crypto toolbelt giving you a bigger estimate from experience.