Back in the day in Leo's basement.... If someone had a question about a technique Leo would get up and show you how to execute it. it would usually leave no doubt in your mind of the effectiveness of the technique. Sometimes after practice some of the senior graduates/instructors who would hang out in the basement after Leo would leave.. would be working on techniques from the class or other things they may have learned elsewhere. Of course arguments would arise on wether it would work at full speed under pressure. Who come to mind are Guros Dave Paer & Rot Atay...if they disagreed one of them would say " Lets put on the pads and see" so they would pad up and the argument would be settled after a few skimishes.
This would happen many times back in the day... it was their way to test theories, concepts and techniques. It is still the way that Bahalanamulti-style comfirms anything may have a question on.
i bring this up because i spoke to a graduate/certified guro last night. who was assiting a master in a seminar in Spain.He questioned the master of his system... why every time he does a certain technique that he gets hurt.
The master than shows him again.. in slow motion how to execute the technique. Of course it works. The guro than does it at full speed and the master is unable to perform the technique under pressure...in short the master got upset and did not work out with the guro for the rest of the seminar and talked bad about the guro to the other participants.
if this was in the basement back in the day..... they would have just put the pads on and lets see.