tag:blogger.com,1999:blog-31655026.post7052471186460490624..comments2024-03-29T11:00:59.816+00:00Comments on nourishing obscurity: Machines to change the world [2]James Highamhttp://www.blogger.com/profile/14525082702330365464noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-31655026.post-21855119516540084892021-04-14T20:55:25.824+01:002021-04-14T20:55:25.824+01:00Not exactly a machine, but a good mechanical princ...Not exactly a machine, but a good mechanical principle.<br /><br />https://www.youtube.com/watch?v=fvMpxF2zfDY<br />Rippernoreply@blogger.com