Fix your wobbly table with just a small tweak - but why does this work? Reddit discussion: http://www.reddit.com/r/BradyHaran/comments/2dvp3m/an_end_to_wobbly_tables_just_trust_the_mathematics/ Featuring Matthias Kreck from the University of Bonn. Animation: Knut Johannes Håland at http://kittyninjafish.deviantart.com Brown papers and production art: http://bit.ly/brownpapers Professor Kreck points out that he was describing the intermediate function theorem, not mean value theorem. A technical paper on this topic: http://arxiv.org/pdf/math-ph/0510065v6.pdf Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Google Plus: http://bit.ly/numberGplus Tumblr: http://numberphile.tumblr.com Music: Alan Stewart - https://www.youtube.com/AlanKey86 Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile Videos by Brady Haran A run-down of Brady's channels: http://bit.ly/bradychannels