I think he meant "The prototype drug won't work". Sadely(sic) making a new drug (that isn't just a generic copy of another) is like coding a new software with java while you only know C#
I think you mean is like coding assembly for a new architecture from an existing assembly program.
'Swimming pools can be dangerous for children. To protect them, one can install locks
I'm tired & slow today... someone please explain this analogy with respect to internet porn (which is the context from which the quote was taken). The possibilities seem endless.
The analogy is good, because once you learn how to swim, you can never drown.
In any formula, constants (especially those obtained from handbooks) are to be treated as variables.