They once caught me with a package of batteries.

Another time, they cleared me to bring a cup through security that had some tiny amount of liquid inside the walls of the cup. But somehow they discovered that I wasn't a fan of their machine that made nude pictures of people, and so they reconsidered and confiscated the cup. That was a close one. I was almost able to take a Christmas present back home with me.

True, saying the TSA keeps us safe is a bit of an exaggeration. But I hate ICE even more than the TSA, and they actively harm people rather than the do nothing security theater of the TSA.

I accidently brought a folding knife through last time I flew because there was a camping knife in the bottom of a pocket I forgot to take out.

I accidentally flew with 4 inch long OLFA razor blade refills in the bottom of my laptop bag 4 times, twice around the Boston Marathon bombing, from and to Boston.

I didn’t find them until cleaning out my bag at home after the last flight. Basically some tape could make them into box cutters like the 9/11 guys supposedly used.

But I had to take off my shoes and belt every time, to feel safe.

I forgot about my miniature multi tool with a half inch dull blade and pair of scissors that was in my flaptop bag and it got confiscated on the first flight

my boss went both ways through those same two cross-border flights right next to me with a 3" folding knife in his pocket

Depends on what the goal is. Making flying safer? Marginal at best. Making people feel safer flying though...