Okay. So, I thought I knew all about the common bits and whatnot. I read through the Bits stickies at the top of the page, but a lot of the pictures don't show up any more and thus can't give me too much information. Most of the people on here seem to be very against the Tom Thumb bit:
Tom Thumb bit.jpg
I can see why, but here's where I'm confused. I was under the impression that the tomb thumb bit was bad because it's a broken bit with long and fairly straight shanks. So why is it that the Tom Thumb is bad, but every other kind of bit that combines a broken mouthpiece with shanks is fine? I read about it all the time on here, where someone will be riding in X bit, and my reaction is wait, isn't that like a tom thumb? But nobody seems to care, which leads me to believe I'm wrong. But I see TONS of broken mouthed shanked bits for sale EVERYWHERE and so many people use them. Isn't combining a broken mouthpiece with any kind of leverage system exactly why we all don't like the tom thumb? Because it puts pressure in so many places and is confusing to the horse? Or am I completely wrong on this?
Edit: Also, broken mouthed curb bits. I feel like those, too, are like Tom Thumbs. But like I said, I may be completely wrong.