I believe they use Radiocarbon dating. This was being done before computers were as incredibly fast as they are now. It is for the most part pretty accurate. Modern computation methods make the process even more accurate.
To compare Al Gore and his Bull Sh** to computers (no he invented NOTHING) does a disservice to those in science who aren’t using (abusing) science for political purposes
“.....a disservice to those in science who aren’t using (abusing) science for political purposes”
I would consider it an honor to meet both of “those”.
The abusers, the politicians and the media have all ruined the general reputation of nearly all science professionals.
I do not know how to fix it, but I know it’s broken.