system
Given the following post, respond as if you're commenting on Reddit:
human
[General Zombies] How much good would a shelter-in-place order do to curtail the spread of a zombie outbreak?

Almost every piece of zombie media I've ever seen uses an emergency broadcast with some variant of "lock your doors, barricade your windows and remain in your homes" as part of the set dressing. Shaun of the Dead is the only movie I've ever seen where it becomes clear in the end that that would have worked if the protagonists had been a little smarter.

So how much good would it do if everyone holed up at home? On the one hand, fewer crowds. On the other hand, canned meat.
gpt
It depends on how effective the zombies are at breaking through doors. Assuming that they can be held at bay this would clear the streets, allowing the military to operate with less difficulty in determining friend or foe. With slow zombies a coordinated sweep (assuming that they know how zombies work) should clear out almost all the zombies eventually. Clearing a major metropolitan center would take time though, so they would probably need to have a means to deliver supplies to people sheltering in place ahead of the army (perhaps riot-police going door to door with supplies). Those in cleared areas could go back to somewhat normal life with some restrictions and education on how to handle stragglers.