They might be basics but if you cant hit the arse end of a barn out to 500m then in the real world you dont have to know about wind an mirage as the distance you will be shooting they wont matter enough to miss anyway.
Mirages has never bothered me much for the target shooting days cant give away one easy way to limit that.......
Wind just look at the vegetation arond like what has been posted it takes time to learn an like i say people get use to things different ways, a with long range cals you can limit this to some degree also
I dont visit the pub much either but know how to have a drink or 2
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