Perhaps there's some kind of weird synergies going on?

There are indeed. A lot of our thoughts will overlap at various points because a lo of the information stream we pull from are similar. This is actualy another post I guess but if you consider that we are all sharing from the same data pool, it is likely we all have similar ideas and then add similarly to the new data. Eventually, all the data becomes the same and as we feed from the same, we think the same and all become one. no more fighting, no more new thought at all :D