> “So it’s hard for us to be ahead of the forgers since they can read our papers and figure out ways to trick our methods.”
Cost. Same as them fooling carbon dating, electron microscopes, isotope analysis, and a host of other techniques.
Forgery has always been about how cheaply you could make fakes, vs. the odds and consequences of them getting enough scrutiny to be identified as such.
Because people desire owning ancient pottery and are therefore willing to pay for it.
People have paid top dollar for archeological artifacts for centuries. Humanity lost a lot of knowledge from graverobbers, illegal artifact hunting and unreported thefts of stuff getting exposed after stuff like forest fires.