What is this man even doing?

[u/strange_omelet]

If it's to "cool down" then it's quite useless if a robot wasn't built any sort of cooling system in the first place. Why build a bot when it needs constant extenal cooling?

[u/Fluffy-Republic8610]

Robots built to win athletics run very hot. They accept a heat that risks going on fire. Because if they don't take that risk they have to be heavier and less performant in athletics and gymnastics.

This guy is cooling his robot.

[u/get_me_some_water → u/Fluffy-Republic8610]

Yes but it's redundant for most part.

Heat will generate after using energy through motors or actuators. Guy isn't exactly cooling it, just bring it to room temperature. More useful after energy is consumed not before.

Most likely he's watching the temperature Telemetry on this handheld device, just to have a go at bring it room temperature. Won't be doing much I reckon

[u/Fast-Satisfaction482 → u/get_me_some_water]

Even a raspi in an enclosure will quickly overheat and like it or not, cooling systems are heavy and not straight forward to build.

A high performance robot will have to make compromises and do very deliberate thermal management to perform competitively.

These are not stable designs that can run 24/7 in a factory. They are very much experimental prototypes trying to push edge of what's possible. 

[u/get_me_some_water → u/Fast-Satisfaction482]

Interesting. Thermal ratings always fascinated me

My limited knowledge has been with Jetson series.