The scenario under discussion is when the car in front doesn’t stop but changes lanes, revealing a stopped car in your lane right where a moving car had been. It’s like the car in front of you was suddenly stopped by magic.

The solution is typically to swerve with the other car, but sometimes that’s not possible.

But it is possible, when the cosequence is someone dying, the likelihood do not need to be high to act carefully. Anyway the example here was about a car in front avoiding a stopped car.

The thread is about how closely to follow a car. If the car is stopped, the answer is "as closely as you like, it's not moving".

This thread is about how closely to follow a moving car. The worry is if the moving car suddenly switches to being stopped. Will you be able to also switch to being stopped before hitting it?

Yea, some people seem to miss that just because the car in front of you can jump over in another lane doesn't mean you can at all. If you have a car beside you, and the car you're tailgating does not, then you're screwed in an emergency situation like this.