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It's impressive but...
Weights of 100kg to be moved around on building sites.... It's gonna cost a lot of money and technical training to achieve what a relatively untrained man can do with a wheelbarrow. Also how will the builders be able to
a) scratch there own arses,
b) stick their fingers in their mouths to wolf whistle (probably carried out with out much thought after a)
c) justify why they are so tired that they need to stop for a cup of tea luv every 15 mins.
still if it gives humans the competitive edge they will need to get a job over their robot counterparts in the future then I'm all in favour.