[cjwilliams]

I wonder if building second stairwells in multifamily buildings is really a cost effective way of mitigating stalking.

[phatskat]

Mitigation isn’t the end result - the OP (as I read it) is saying that two exits provides for not being trapped by a stalker. You may still be stalked or approached by a malicious group of actors, but a second exit makes it much more difficult to be cornered.