What's wrong with this picture?

I rode 120km on this cassette the other week, back to home from Northampton parkrun. I tell you what, it's damned infuriating!

Some of these things are not in the order that they should be...

The lesson to learn: No matter how many times you've done something, check it! Can you imagine racing on this? I'd be ready to throw my bike off a bridge just like David Millar did by the time I'd finished.

Still, at least I'm not leaping through thorny doom like my Mrs.