So a random left|right arrow performs better? I wasn't really calling for 'racial profiling'; I was trying to convey that the use of a random arrow app totally

So a random left|right arrow performs better? I wasn't really calling for 'racial profiling'; I was trying to convey that the use of a random arrow app totally removes human judgement no matter how flawed it may be. We need to address the abuses of people in powers of authority, but not remove the ability or tools to do the job they are hired for. There has to be some allowance for judgement without prejudice in perception. Yes, it sometimes results in ignorant and racist people making horrible decisions, and given too much power. We have to allow for some human common sense here, otherwise, bring on the robots and AI, and I hope they can achieve better (although, AI, or computational intelligence, is not at a level of a human's ability to synthesize untrained data into a 'hunch' or 'gut feeling' wired through experience). Regardless, I feel the whole TSA thing is a political charade, and this has been proven in the press countless times, and by the two times I forgot to remove my multi-tool from my carry-on before boarding, and it was not detected. I now live in East Java, Indonesia, and I am accused of having a 'darker than Caucasian tan skin colour.' who refer to foreigners (Westerners) as 'buleh'. I also awake to call-to-prayers each day, and hear it another 4 times in the day. Let's say my birth and upbringing in a predominantly Hispanic neighborhood, and now in a majority-Muslim region has even tempered my tolerance more than most average people in the world. Having lived in SE Asia, I can tell you that the level of prejudice reminds me of where we were at in the U.S.A. in the early 70s (Chinese to other 'dark-skinned' SE Asians, to white Westerners, etc...).