[fleetwoodsnack]

>And by production, I mean something you're going to handle with any frequency. The ease of composability is counter to the hardening necessity for everyday use.

Let's remind ourselves that this is a highly advanced proof-of-concept. If the issue really is simply the integrity of materials, that can be improved, and should not be considered a long-term limitation of the underlying technology: which is frankly too sophisticated from a design and software perspective to be set aside as a toy.

After all, the difference between a "Fisher-Price" drill and a "De-Walt" drill is the integrity of materials and underlying software. It is arguably a toy aesthetically, but (in accord with your argument) it is a few carbon fiber pieces away from becoming a useful generalized personal computing tool, the same way a drill is a useful generalized power tool.