Bojinka is absolutely nothing like the current situation, except in that it used liquid explosives. The explosives were pre-mixed before being brought on board, not mixed from noxious and highly concentrated chemicals in highly exothermic reactions that would more likely result in the inside of the lav (and the would-be terrorist) having acid and chemicals spewed upon him than result in any kind of explosive being made.

That's why I think this whole thing is ridiculous. Anyone with a basic knowledge of chemistry and a few hours to spend on Google can figure out exactly what one needs to construct such a bomb, and find out exactly why it's infeasible to construct it on board. The only one that has components undetectable by ETD is TATP, but without several pounds of ice in the lav with you, you're not going to have much luck making it. All the others have nitrates as a component.

Go after the guy with the rather large dark glass bottle full of something that looks to be water but has a strong smell and that he refuses to sip. (While you can drink low strength peroxide without killing yourself, since it's mostly water, drinking high concentration peroxide such as would be necessary to make TATP or other peroxide bombs, it'll cause immediate and significant badness)

The current security measures are worse than useless, as they give us a false sense of security. After all, a couple of determined terrorists could always inject their bladder with the components of many binary explosives, although TATP is not one of them, since the peroxide would immediately begin foaming and cause the person's bladder to burst before they managed to get to the airport (or out of the bathroom if they did it in the airport bathroom before security)

I don't quite understand why so many are completely unwilling to take the time to even begin to understand what a farce this whole thing is.

I will agree with one security related statement, though. We need more puffers and more ETD swabbing, not less. Putting shoes through X-Ray machines does absolutely nothing now that we have WTMDs that detect metal all the way down to the floor, and will therefore register a knife concealed in a shoe, which is the extent of the threat from an ETD swabbed shoe.