Comments by "ron black" (@ronblack7870) on "Mark Rober" channel.

  1. so every day 2000 balloons worth of helium gets released ? maybe they should use hydrogen instead .
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  2. hey i remember dean kamen the guy who invented the segwey also invented a gyro stabilized wheelchair that did the stuff this one does including climbing stairs and popping up so the user can reach a high shelf. that was in 1999 it was going for FDA certification. it is called IBOT and has been on sale since 2019 by mobius mobility.
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