great thread, I agree. The topic "aborting for reactive wind shear" was brought up here somewhere earlier, I believe. In my eyes, that's probably one of the kind and can cause great deal of trouble. I'd even regard to that as something like "toss the coin" decision. If one had a bit less tail wind, in case of rejected take off, no overrun would have happened though if there was a bit less tail wind, in case of continued take off, one could have got airborne safely. Not sure if there's a reliable panacea for this nature's trick except to delay the take off. The dilemma is caused by a difference between the actual speed of a/c and the indicated one, making void all the inputs used for take off calculation. The rest is pretty much clear and any kind of assumption isn't really appropriate. My 2 cents.
Cheers
