Unfortunately not just youngsters! At my clock club (EFHC) more than a few Grandfathers were seen to be 'challenged' by the Happypuzzle clock. They used to regularly turn up at our auctions placed by disillusioned grandfathers who failed to interest their younger grandchildren in the workings of clocks as the said grandkids did'nt see the point…..clcoks don't DO anything, much……and anyway most kids these days can't tell the time from a clock face and don't need to……..
A few years back we used this clock on our stand at the Ally-Pally engineering show to interest young vistors but most just looked glum. However, we had a little girl show up with her Dad and she was an absolute wizz and also solved our other wheel meshing puzzle too. We tried hard to persuade Dad how unusual her aptitude actually was so hopefully he later encouraged her talents.
They no longer allow conventional clock faces in school exam rooms because the 'strange' & 'weird' face adds considerable stress to the kids……