It's just another type of input, there's distinct advantages and disadvantages to all of them. None of them will ever obsolesce another. Apple's extreme stance

It's just another type of input, there's distinct advantages and disadvantages to all of them. None of them will ever obsolesce another. Apple's extreme stance on keeping things as simple as possible pushed the market for a long time, but things are starting to swing back around now that bringing back the inputs of yesterday appears to be the only way to separate a product from all the others. I'd like to see trackballs and spinners (like on Tempest) make a comeback too.