Apple often tries to re-engineer the thing they develop.from the ground up. Seems it started this way on Titan, too, then scaled back and decided to focus on the main problem: safely getting around. Nothing wrong with this I think.
On reinvented wheels, early ideas rejected today may get a second life later, e.g. spherical wheels for moving in very constrained environments.
On reinvented wheels, early ideas rejected today may get a second life later, e.g. spherical wheels for moving in very constrained environments.