Why can't/don't people fit tack correctly?

[Overread]

You wouldn't buy a helicopter having had 3 lessons but that is exactly what people do with horses and then cheerfully say that they will learn everything as they go along, no problem.

You can buy and use a chainsaw without licence; whilst basic training is 3 days followed by an exam, pass the test and you can cut down trees!

Speed is everywhere even in formal assessments and training. Heck the idea that government would make it a year with provisional licence and a years worth of driving lessons was scaring many people, mostly with cost, but with the idea of spending that long learning (1 lesson a week is only 50 lessons - that's possibly less than 1 lesson per year you will drive in your life).