Vardagsstress ? Jag har ftt en pistol upptryckt i ansiktet , behvt springa frn en knivbevpnad substansmissbrukare , och blivit misshandlad pga mitt jobb . Jag har kollegor som har blivit tvingade att skriva intyginte skriva intyg under hot frn organiserad brottslighet . Men varfr byter du inte jobb ? Ingen tvingar dig att jobba med det du gr . <| sep |> This could be useful for teaching HS students how to multiply matrices , but as other people have mentioned it doesn ' t really visualise what ' s ' actually ' going on . For a visualisation of the actual transformation on mathbb for n 1 , 2 , or 3 of course I would expect something like showing visually how it affects a unit ball and drawing in eigenvectorsvalues . Nothing wrong with the post itself , just it has a bit of a misleading title .