I guess everything is relative….harvesters are still pretty new where I am atno matter what shape they come in. And it is interesting to see old systems coming back. For a long time we tried to make hand fallers, self loaders, clambunks (to name a few) disappear. Now all are being talked about as “needed” to achieve our timber supply these days. There is also a large submerged forest where I live and people are starting to talk about how to recover wood from under the water again. Lots of work, to varying levels of success, went into that 20-25 years ago but nothing since.