Here's my opinion, I'd like to hear what HN'ers think:

* You get a multiplier from using the right tools

* You get a multiplier from using tools you know well

* You get a multiplier from having solved a similar problem before

* You get a multiplier from understanding the requirement well enough that you:

  - Don't risk solving the wrong problem by 
    working from a spec that someone else has written

  - Don't have to ask lots of questions of your customer     
    (and wait on the answers)