Skeptic Pete said:
dv said:
Yeah, we originally had 125 of those (precisely) and now have 102. Mikey does often put them in his mouth so I suspect the solution to the mystery of their disappearance is alimentary, dear Watson.
More probably 126
There are (were) small Buckyball sets consisting of 125=5×5×5 balls, but they were more expensive per ball than the usual 216 ball sets.
As to the dangers of these magnetic balls,
From http://en.wikipedia.org/wiki/Neodymium_magnet_toys
Neodymium magnets, usually small spheres, have been manufactured as educational toys. In several cases, children swallowed them, and injured their intestines, resulting in at least one death. As a result, regulatory agencies banned them, and the magnets are no longer marketed as toys. This led to a debate over the risks of toys and parental responsibility.
…
Buckyballs launched at New York International Gift Fair in 2009 and sold in the hundreds of thousands before the US Consumer Product Safety Commission issued a recall on packaging labeled 13+. According to the CPSC, 175,000 units had been sold to the public. It is not known how many sets were actually returned. Buckyballs labeled “Keep Away From All Children” were not recalled.
…
The swallowing of small magnets such as neodymium magnetic spheres can result in intestinal injury requiring surgery. The magnets attract each other through the walls of the stomach and intestine, perforating the bowel. The Centers for Disease Control reported 33 cases requiring surgery and one death. The magnets have been swallowed by both toddlers and teens (who were using the magnets to pretend to have tongue piercings).
Defenders of the toy say that the rate of injury is approximately 1 injury per 100,000 Buckyball sets and less than 1 injury per 21.5 million individual magnet pieces. By comparison, the rates of injury due to dog bites, tennis, skateboarding, or ingestion of poisonous household chemicals are between 100 and 1,000 times higher. The magnets are marketed to adults, with labels warning of their danger to children.