Like I said, I didn't think your "opinion" would change. I gave you facts, realities. Is the information I supplied incorrect? The time difference represented in the distance between runners A and B has nothing to do with timing method at all. The distance difference between runner A and B represented by .1 in a 100 meter run is 1 yard. Is it 1 yard in a 40 yard dash? No, it's not. It's half a step. It has nothing to do with who or what is timing the athletes, ie. " human error". It's pretty simple. And by the way it's not human hand timing "error" that has determined the .24 accepted difference between a hand timed 100/200 and a FAT/ACCUTRAC time. But the REACTION TIME OF THE RUNNER out of the blocks that is the reason for the .24. Times are slower because the timer is tripped at exactly the same time as the gun goes off. It takes the average athlete .24 to react to the gun. Thus the accepted official .24 conversion between a hand time and a fully automated in a 100 or 200 meter run.
You also choose to ignore the timing method differences. We are talking about THREE different methods here. Fully Automated timing found in track meets. SPARQ (human start, laser finish) which is the "automated" timing method used in timing football players in the 40 which you are using here. And the simple hand times often used in both settings.
Reality? The general difference between SPARQ and an expereinced (most HS coaches) is ONE TENTH or LESS. Yes, less.
I'll give you ONE real life example. Last summer @ USC's camp a particular athlete ran the 40 twice. The timing methods used were BOTH, SPARQ and the USC coaches hand timing at the same time. Suprisingly, both runs produced identical times using both methods. The SPARQ method showed 4.41. The coaches hand timing method showed 4.33 both times. A difference of LESS than one tenth both times. I realize this is only one example and one example does not a study make but..................
Your contention that ANY runner chalking up a 4.5 SPARQ that would convert to a 4.3 much less a 4.2
Well, it's just plain stupid. I've given you proven, tried, reasonable and accepted "conversions" fact and real life instances. You've given us "your experience".
In truth, my resume' doesn't even matter here. The statements and evidence stand on their own. Ok, now that's 2 posts in the last 30 minutes where I've provided you with professional advice/consult. That will be $100.