Followed your suggestion and checked further.The Draper sysytem appears to be nothing more than a polygraph test.The questions were asked and required a yes or no answer.A polygraph can be beaten by training,a known fact.I think that it can also be beat by taking of drugs.Also,I have doubts about it's ability to determine future courses of action.So,for example if a terrorist was on a recon mission he would get through whereas SDSS would determine intent even for a future mission.It seems to me that SDSS has a far superior method of detection.
Also,Yahoo business description states that SDSS markets its products to homeland security authorities in U.S.I think that if SDSS went head to head with Draper in a TSA test that SDSS would prove to be the superior system.
If anyone on board has expertise kindly educate me on the difference between systems and your opinion on which is superior and why.