... the prototype *will* become the production code.
That is the intent. But only once the omissions of the prototype are demonstrated and acknowledged. That way the refactoring of the prototype has budget for, or an explicit waiver covering, those omissions.
Examine what is said, not who speaks.
"But you should never overestimate the ingenuity of the sceptics to come up with a counter-argument." -Myles Allen
"Think for yourself!" - Abigail
"Time is a poor substitute for thought"--theorbtwo
"Efficiency is intelligent laziness." -David Dunham
"Memory, processor, disk in that order on the hardware side. Algorithm, algorithm, algorithm on the code side." - tachyon