Now there's nothing wrong with purse math.
That's a massive understatement. For most people, money counting is the most important type of math.
MRIs are expensive, and autism-like behavior is obvious enough that you can narrow down the group of people you're going to test significiantly before you start testing.
In the case of autism, the earlier you get a diagnosis the more effective the treatment will be. So waiting until the child starts showing symptoms isn't ideal. It's better to have a way of testing for autism while the child is still under a year old. That's why it's important to have physiological tests, as opposed waiting for the parents to notice eye contact or social problems.
There's a big difference between a plane and a train. With a plane, it's easy to inflict massive damage with relatively small weapons. This is because you're dealing with an aluminum tube packed with people flying through the sky. If it get's diverted the smallest amount from it's path, or sustains minor physical damage, then a large percentage of the people inside will die. The 9/11 terrorists brought down the twin towers armed with trivial weapons such as knives. In addition, a plane is an isolated environment, so once a handful of terrorists take control, there isn't much that the entire US armed forces can do to stop them, short of taking down the plane.
But with a train that's all different. The train is on the ground so it's easy for a helicopter to catch up with it, drop $SPECIAL_FORCE on the the roof, and take back the train. And even if a terrorist does manage to detonate a bomb on the train, it will probably only kill people in the same car.
So I think that there's more reason to be paranoid of terrorists on planes.
This does arouse suspicion. even if you forget the variable names for a moment, any pattern like bool,real,real, *real, int, *char,*char,*bool,.... that is identical between two structs would be an improbable occurence. and when you see it in back to back structs it becomes nearly impossible to happen by chance.
Actually, the order of declarations in a struct is far from random. Even without getting into specifications and compatibility, there're multiple performance issues (such as padding) that are directly related to the exact order of the variable declarations.
Whatever iconography that hangs from his neck (Isreali dog tags? a Star of David?) can only afford a cheap black cord.
If that is really an Israeli soldier than the iconography is a dog tag. In addition, it's connected to his neck with a steel chain which is covered with a "cheap black cord". All combat soldiers cover the steel chain so that it wont reflect light and give away their position in battle.
The key elements in human thinking are not numbers but labels of fuzzy sets. -- L. Zadeh