It's so confusing to me as a piece of art using engineering principals to express something. How would it even work? Hydraulic fluid would need to be under pre

It's so confusing to me as a piece of art using engineering principals to express something. How would it even work? Hydraulic fluid would need to be under pressure. It just scooping it back in wouldn't keep going. Perhaps if it was a lubricant, without which the mechanical system would overheat... but this wouldn't quite tell the same story... Then anyway we find out the robot is purely electrical, there's no hydraulics. Rather than contributing to the story as the post suggests, this feels like failure in execution. It was clearly just easier to build this way and then have a pool of fluid. I guess for me the execution matters in this instance. The idea that's the artist is trying to express gets confused by the inconsistent engineering, for me at least. I feel more pathos for those boxes that switch themselves off (https://www.youtube.com/watch?v=3KTilOsXBmU https://www.youtube.com/watch?v=3KTilOsXBmU). While going for a completely different emotion, they seem to express it using engineering quite well.