Changes

This was later revised to 40,000 years.

This was later revised to 40,000 years.

Another scientist later used other methods to derive a date of 62,000 years.

Another scientist later used other methods to derive a date of 62,000 years.

The original discoverer, unconvinced by this result, used a different method again, and again came up with a date of 40,000 years.

The original discoverer, unconvinced by this result, used a different method again, and came up once more with a date of 40,000 years.

However, such disagreements are not restricted to radiometric dating and occur in all fields of science.

==Some major methods of radiometric dating==

==Some major methods of radiometric dating==