There's a joke here somewhere, lets see.My cat makes 90% of my minecraft related decisions for me. Earlier this morning I couldn't decide which bee species to breed next. So I found 2 cardboard boxes and wrote Iridium on one and Uranium238 on the other. My cat laid down in the Iridium box so, iridium bees it is!
Assuming you're using a radioactive isotope of iridium (wikipedia suggests IR192, thanks wikipedia), then if your cat lays down in a box, and you close the box, then after an atom of iridium/uranium238 decays, then your cat may or may not have transformed into a bee, and you won't know until you open the box?
Something like that.