This section of the article was particularly bothersome:
On some visits the party would see Sentinelese; on others they would not. Invariably, however, they would try to land - at a place out of bow-shot, if there were natives on the beach - and leave gifts. These included sacks of coconuts, bananas, and bits of iron conveniently sized to be hammered and scraped into arrowheads; occasionally they brought special presents like mirrors, red ribbons, rubber balls, and bead necklaces.
It's funny, or maybe horribly sad that people keep leaving things in the hopes of triggering some desire to make tools.I wonder why everyone is so eager to make them like us. The whole reason they are interesting is that they're not. If they became a tribe with access to rubber balls and spatulas...wouldn't that be destroying the very entity causing our amazement, curiosity and wonder. It's as if people cannot help themselves they feel a need to destroy something so different so amazing. It's bothersome, to say the least. On the other hand the Sentinelese seem to be doing a fine job of mainting their space by launching arrows at fat interlopers.