THIS^^^is ignorant. Say it as many times as you like but it won’t change the truth. It’s so wrong that it seems as if you’re just trying to establish a level of misinformation that no one else can top. Congratulations, you’ve succeeded.
“Speed” can be taught. Of course it’s relative but it absolutely can be taught. And, I’m specifically not talking about the “… coached to properly run a 40 yard dash as efficiently as possible”. Again, what you’ve written is wrong. Speed (and quickness) are forms of functional strength. And no one is saying that you can’t coach someone to be stronger.
In fact, for those who CAN teach speed (and also for those who learn it), it’s a matter of getting the athlete to do what some athletes just seem to have figured out intuitively.) Other times it’s conceptual, and with proper drills and strength training (proprioception etc) athletes absolutely can be “re-wired”.
What is the starting point? Learning how to properly apply force. Period. And, yes, that applies in conditions that have nothing to do with going in a straight line. Moving a WR/DB from 4.7 to 4.5 should ALMOST be a standard.
DING! DING! DING! THIS^^^
In the spectrum of “speed” … only SOME of the “combine lasered sub-4.35-ishes” (combine timing is still bs, but that’s for another conversation) have a prayer of being a national class/Olympic sprinter type. These guys are special! They move different! It’s visible. And, what they do … I don’t believe it can be taught.
4.4 is fast. 4.5 is still fast. And 4.6 - in certain cases - is fast enough. These guys are different types of athletes than the “combine lasered sub-4.35-ishes” BUT it can be taught.
But only person making a “Barry Sanders-type” is the one who made everyone else. Or, just pick more talented parents.