[spookthesunset]

Don't forget interns. Those poor souls are absolutely screwed by all this. In no circumstance can I see mentoring an intern working remotely. At least not nearly as effectively as in person.

[xvilka]

There's entire class of remote internships like Google Summer of Code, ESA Summer of Code, etc. Everyone doing just fine - mentors and interns.

[FearlessNebula]

Google measures intern productivity each year and this year remote has been within the amount of typical variation.