Reading Discworld!

[farothel]

What I'm not sure about is if some of the bits I liked and didn't like would have been different if I'd read out of order.

I didn't like the very end books much but if they'd got their first then

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Maybe the more tediously preachy bits would have gone undetected until their 'repitition' in the earlier books.
Maybe the inversions and plots would have been more original
Maybe the 19th and C A-M would be more natural
etc..

Maybe, but you might also have missed some recurring things, especially with Vimes, who evolved a lot in all his books. The stuff with Moist is also better if read in order, or not everything will be clear.