The bigger problem with Ara-style modularity is that as computing power shrinks (in both size and power draw) it becomes pointless to think of modules of "a" co

The bigger problem with Ara-style modularity is that as computing power shrinks (in both size and power draw) it becomes pointless to think of modules of "a" computer. There's simply no point to try to separate processing power out of any component that has other physical constraints. e.g. displays, lenses, antennae, etc. So you won't want to slap a 'better' camera onto your smartphone to leave your DSLR at home. But not because the interconnect between lens and mobile "base" will become too wasteful or inefficient. Simply because that future lens will be a stand-alone camera and it will operate within a network of things, in which your mobile phone won't be a necessary component. Similarly with any other useful components. You won't have to make any trade-off of space other than "what can you physically carry". Need more storage? Put a storage pod in your pocket. Want a rangefinder? grab a 'network of things' capable device. Need more battery? grab a power brick that can charge anything with a capacity limited only by your willingness to carry it, rather than being locked into a form-factor unrelated to (and possibly in conflict with) your power needs.