No, with plenty of knowledge.
I beg to differ. I think its plenty of dementia to be frank. But then again, self-praise is the last bastion of the egotistic fools, or so said someone.
The knowledge that no-one can ever know remotely accurately how fast bowlers were before 1998, and certainly that comparisons can't be made with any accuracy without two deliveries right in front of you at the exact same moment. And the fact that there's no realistic reason why bowlers should be bowling any slower 70 years ago.
Like i said, the human eye isnt good at precise calculations (with respect to velocity or trajectory) but it is quiete good at 'relative speed' guaging. Ie, you cannot tell if a car that zoomed by was going at 85mph or 88mph but you can very well tell which one is the slower car, given that one goes past at 85mph and the next at 82mph.
And there are plethora of reaons why bowling on average can conceivably be slower than it became in the post 70s era( by average i dont mean the absence of a superfast bowler but rather, the number of superfast bowlers in any given timeframe or the mean average bowling speed of the field,broken down by type-specific bowling).
For one, try getting your mind around the fact that bowling is a HIGHLY complex action that requires astounding precision and coordination of muscles. Its not just running in and hurling the ball. If that were so, the strongest bowlers would almost always be the fastest bowlers.
The fact that there were no coaches back then, or atleast, coaches with even remotely of the same callibre as the ones we've had for a few decades is a decisive reason. The reason you see many 'weird' bowling actions that are totally amatuerish in old tapes and shows is a direct reason of that.
For two, try getting your mind around the fact that nutrition in the early 1900s/late 1800s was nowhere CLOSE to the 70s/80s/90s/2000s etc. standard and neither were rehabilitation therapy.
Err. eh? No, for the record, but what's it to do with anything?
if you dont think that 'constant length' means 'identical deliveries', then i see no reasoning behind your comment : " Any doubt created by constant length is unreasonable."
No, it's based on no statistical research, it's based on viewing research - McGrath between 2001 and 2004 was not capable of bowling wicket-taking deliveries on pitches that offer neither seam-movement or uneven-bounce.
It *IS* based on statistical research.
There is always more than what meets the eye and Ambrose/McGrath are prime examples of that.
I've TALKED to players personally who've faced McGrath and they all tell you one thing :
That after Wasim Akram, McGrath has the most variety and variations in his bowling.
The fact that his current ball moves 3cm away while his previous one moved 3cm in is enough of a movement to create doubt and trouble in the mind of batsmen.
Clarrie Grimmett wasn't a big spinner of the ball. Anil Kumble isnt a big mover of the ball.
Curtley Ambrose wasnt a big mover of the ball and neither is Ambrose.
Yet they are/were all highly successful. Why ? because their variations are subtle and gets the job done.