Well, if you have some links to contrary estimates from reliable sources, that would be great. The 80% figure had a big impact on my thinking. If the number is bogus, and there has been no change in the flow, I would find that reassuring.
No, it has nothing to do with the thread. I just thought I'd mention dead puppies.
Dead puppies.
Perhaps, before anyone takes it particularly seriously, you should establish that this 80% estimate is something that ought to be taken seriously, rather than shifting the burden of proof by requesting that others disprove your position.