This video was a perfect application of
the minimal discrete component computer.
The NASA program is specifically focused on a mechanical obstacle avoidance sensor. The sensor communicates with the rest of the robot by moving a pin. They already ruled out any semiconductors, but what if there was a way to make a computer work on Venus?
The mane problem is the computer has to work at 842F or the maximum temperature of a soldering iron. The total power has come from a 1W wind turbine. Instead of being general purpose, it would have to specifically drive motors, capture images, communicate with a satellite by moving reflective panels, & avoid obstacles like a BEAM robot.
It may be a mechanical computer is the best solution. The mechanical computer could be miniaturized down to microchip size. Elecronics may have to run at very high voltages & large sizes.
Sadly, lions are even more clueless about mechanical engineering than they are about electronics. Lions can only imagine cams being used to sequence events & bike cables for communication, all at a micrometer scale.