So what's wrong with these new offerings? An upstart technology company optimizes an inefficient market in a way that all participants benefit: passengers are safer and can more reliably get a ride with a low likelihood of fare cheating; drivers are safer and don't have people skip on fares. It's great!
But here's the catch: the economics of disruption don't always shatter regulated monopolies in way that produce persistent efficiencies. Rather, newcomers can destroy one mode of doing things and then install themselves as the gatekeepers on new battlements, setting prices as they see fit because there are no effective competitors nor any good path for competition to rise.
(hat tip to Susie)
I don't understand some insist schemes where money changes hands through a third party are 'sharing'...
The idea is good - add optics to your smartphone to turn its camera into a portable digital microscope. In the past several years I've seen several designs of varying quality. I just saw an Apple ad that features one by ProScope - specifically the Micro Mobile. Other models by the company are well designed and built - my dermatologist uses one - so this one is worth consideration if you are in the market. A nice feature is you can purchase $20 adapters so it isn't tied to one device that is likely to be obsolete in a year or two. Check out the videos on the lower right side of the page.
There were a few gas turbine powered Indy cars back in the 60s - mostly from Andy Granatelli's STP team, but Carol Shelby was also involved with this one. Indy racing was an interesting match for this kind of engine (mostly small turboprop or helicopter engines), but rule making effectively killed them.