Back up that bus without running people over... I've used them IRL and seen micro-scopic features, so your assessment seems to lack evidence.
Anyhow, crazy awesome clinical, education and novelty value. There are plenty of situations where donating lab equipment is as cruel as giving someone a white elephant, but this is the polar opposite.
The cost is mostly in the bead. The tricky part is holding it a precision distance from the focusing plane, which the paper contraption accomplishes (clearly it's been simplified). The other neat aspect of the prototypes was that one part can be sanded down more on one side than another, where sliding a part allow very fine focus.
Anyhow, crazy awesome clinical, education and novelty value. There are plenty of situations where donating lab equipment is as cruel as giving someone a white elephant, but this is the polar opposite.
The cost is mostly in the bead. The tricky part is holding it a precision distance from the focusing plane, which the paper contraption accomplishes (clearly it's been simplified). The other neat aspect of the prototypes was that one part can be sanded down more on one side than another, where sliding a part allow very fine focus.