While this definitely is an impressive an impressive one, those artificial pneumatic muscles have been around for ages [1] but have not become much smaller. My

While this definitely is an impressive an impressive one, those artificial pneumatic muscles have been around for ages [1] but have not become much smaller. My guess would be that there is some physical limit on how useful they can be. [1] https://en.wikipedia.org/wiki/Pneumatic_artificial_muscles https://en.wikipedia.org/wiki/Pneumatic_artificial_muscles