3 months out of a 6 year term isn't that long to me

I'd say it should be based on his prognosis and his personal wishes. If he really can't execute his duties in the office then maybe he should leave. If he's on the mend, wants to be there, and is cognitively capable of doing the job then why not?

I guess my concern is "encouraging" someone to resign versus trying to oust a progressive politician. I'd prefer him leaving if he actually wanted to.

Does he want to resign?

When it comes to field theory and high energy physics, is it accurate to consider quantum fields as fundamental and particles as energetic perturbations of those fields?

What if people don't deserve to be beaten even if they do have a mental health episode and aren't harming anyone

Space isn't matter, it is what matter exists inside of. And the space is expanding in all directions simultaneously, irrespective of a single point. An analogy would be like zooming in on the cartesian coordinate system and seeing more points appearing between the grid lines. So the distance between "1" and "2" increase despite our ruler staying the same length.

As for what space is expanding into, it's a bit of semantics and a bit of scientific definitions/limitations. There is no proof of there being more than 3 spacial dimensions and the universe is defined as the thing containing all of the space, matter, and energy in existence. So as far as we can see there is no "outside" of the universe. It's an all encompassing, self contained thing.