Potassium argon dating animation
Aside from the known inherent weaknesses in assumption and methodology (which we shall begin discussing shortly),we cannot even verify those dates objectively.Not even uranium dating can be confirmed, for no one has sat around watching uranium decay for thousands or millions of years, and testing its decay loss rate from time to time.
If it is tried a thousand times and does not even occur once, and then is tried thousands of more times and never occurs, then the chances of it occurring keeps reducing.
"In a billion years [from now], it seems, intelligent life might be as different from humans as humans are from insects . To change from a human being to a cloud may seem a big order, but it's the kind of change you'd expect over billions of years." Freeman Dyson, Statement made in 1986, quoted in Asimov's Book of Science and Nature Quotations, p. [American mathematician.]"Slowness has really nothing to do with the question.