Nice try. That's the logical approach tho. It REALLY don't work that way.

Need Statement - Development Specification - Solicitation - Source Selection - Award to low bidder - Accept hardware that meets half the requirements @ twice the price.

Marlinstein Approach:

Need Statement (I want it) - Development Specification (mental image) - Try it - fix it - Try it - fix it - Try it - fix it - Try it - fix it - Try it - fix it - Try it - fix it - Try it - fix it - Try it - fix it - ...