alt Hacker NewsIt's possible to put holes through things without a drill. People can get onto islands without boats. How do you define rope, and what else might cause similar wear? Are you certain you can distinguish them?
Archaeology has come a long way over the last couple of centuries. It used to be little better than grave robbing and crackpot (often racist) theories. Archaeologists made all sorts of assumptions that turned out to be ridiculously (and sometimes tragically) wrong. Excavations once involved dynamite and bulldozers. Things have changed. Techniques for re-analyzing and extracting new information from old finds are allowing archaeologists to make discoveries without digging at all. Even a careful, modern dig is a destructive act that can only be conducted once.
It's not frustrating. It's progress.
If you find a man made hole with a perfectly vertical shaft and high aspect ratio (tall and narrow), it was drilled. Individuals can float or be washed ashore on an island, populations can't. If you find entire civilizations on distant islands, they got there by some sort of boat or advanced raft. Rope generally implies twisted or braided fibers, so maybe it's difficult to tell if this was artificially twisted or a natural one like a vine. But if it looked like a rope, and was used like a rope then it was a rope.