[marktwain]

The "still suit" was always a physical impossibility, without a significant, compact energy source.

None was mentioned in the novel, that I recall.

The human body uses water to rid itself of waste heat. It is impossible to retain the water and get rid of the heat, unless you use an outside energy source to do it. Then you have to get rid of the waste heat from the energy source...

Dune was far more fantasy than science fiction.

[Red Badger]

None was mentioned in the novel, that I recall.

Yes it was. Pumps in the feet soles generated the energy needed to operate the suits as the wearer walked............