This is funny in a very dark sort of way. Let’s do some numbers: Suppose that after some time about 100 people a year die from extra radiation exposure due to all these scanners. That’s a fairly low number, it would be impossible to even notice this number from the cancer statistics. Given the millions of people that get scanned every year and that spend sufficient time near those scanners, that’s a tiny percentage. Now let’s see, let’s suppose we take the last 50 years of plane travel before 2001 and we notice that number of people killed in terrorist attacks including 2001 is a little more than 3000. That’s about 60 a year. Let’s suppose that no terrorist attack ever happens again (yeah right). Still we’d be killing almost twice as many by our security measures.
I wish my granddad were alive, this is what he did (nuclear hygiene). It would be nice to ask if 100 is a reasonable estimate.