That doesn't mean it doesn't happen, just that your lifespan is not long enough to sit around waiting for it to happen. All of the evidence says it does.
No, you can speculate that it does, but I speculate science observe mutation and conjecture evolution. Which btw, is fine and I don't have a problem at all with this, but schools teaching evolution as FACT is just wrong.
Time should NOT be the errant element of proving a chemical DNA process of evolution.
If evolution is indeed a innate scientific process, its formula should be definable and demonstrable in everyday experiments.
But -- it's not. Because -- it's bunk.