If you don't get one job you should have - there are others - it's unfortunate but not life altering.
If 3 years into your marine biology program a professor who always teaches a mandatory course fails you because you're a woman who wears non traditional dress - you're not graduating and now there are no jobs. (And this is an example that actually happened to someone I know - not in a western country)
More systematic than a job interview.
If you don't get one job you should have - there are others - it's unfortunate but not life altering.
If 3 years into your marine biology program a professor who always teaches a mandatory course fails you because you're a woman who wears non traditional dress - you're not graduating and now there are no jobs. (And this is an example that actually happened to someone I know - not in a western country)