Why, in particular have you become more pessimistic about the timelines for robotics? I've also been headed this way, but it's as a complete outsider of the fie

Why, in particular have you become more pessimistic about the timelines for robotics? I've also been headed this way, but it's as a complete outsider of the field simply extrapolating directionality comparing promises to deliverables with the former exponentially outpacing the seemingly linear, at best, progress of the latter. Interestingly the same is also true of many other fields from genetics, to AI, to molecular nanotechnology. The latter being a radical example of something going from 'the next big thing to revolutionize society' to all but disappearing in a period of < 10 years.