Two... was that you shouldn't ever make a hundred (or more!) of anything until you know it's proven success.
(Ain't THAT the truth!...) ... or even 50...
What did Mrs. Bullet say to Mr. Bullet? ... "We're having a BeeBee!"...
IF THE SHOE FITS, WEAR IT!... IF THE GUN FITS, SHOOT IT!
"Experience is something you don't get until just after you need it."