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Absolutely. And many random changes are disastrous for the organism.Yes. Usually. But then sometimes you look at a naturally evolved process and think ‘geez that could have been designed better’!
Never forget it started with something random and there are many solutions to the same biological problem.
Teeth, rocks in a gizzard, secretions that dissolve food outside the body - all good solutions to a problem. None perfect.
Anyway, Minnie’s personal solution to her blocked crop is to fill it as full as it is possible to fill.