It's just weight. If you remove the human scale constraint, you can use hydraulics and easily lock out all your joints with reasonable complexity and maintenanc

It's just weight. If you remove the human scale constraint, you can use hydraulics and easily lock out all your joints with reasonable complexity and maintenance demands. If you're unfamiliar, just look up the history of electrohydrostatic actuators and see where they're at now. https://www.moog.com/products/actuators-servoactuators/actuation-technologies/electrohydrostatic.html https://www.moog.com/products/actuators-servoactuators/actua...