[stoney]

Not sure why this is downvoted. I think it's probably right.

I get randomly selected for the bomb test almost 100% of the time in Australia. I don't think there is anything about me that is being discriminated against (typical white male).

I think they just screen a high percentage of people. Also, I think the longer you hang around after the x-ray (repacking your bag, getting dressed, etc), the more likely they are to approach you.

[jacques_chester]

Even if it there was a 50% chance of being picked, to have it happen (I've been counting) 8 times in a row so far is highly, unlikely -- 3 in a thousand. At 10% we're talking millions-to-1 that it's purely random.

I just don't buy it. Humans are involved. Humans are not cryptographic-grade RNGs.

[kondro]

You're either very lucky, go through security at quieter times or self-selecting (subconsciously) by choosing the optimum time for you to be chosen.

[jacques_chester]

Airports bunch flights together so they can cut costs. It's always busy. As for "self-selecting the optimum time", I don't have to. I can self-select an interesting beard.

[Nick_C]

Canberra by any chance? Much, much heavier screening there.