Co se tyce blbinky, radeji bych videl odkaz na puvodni zdroj http://www.xkcd.org/424/ (prestoze xkcd je pro nekomercni pouziti free to copy&share) – uz jenom proto ze je tam 690 dalsich skvelych kousku stejneho autora :).
Warning: this comic occasionally contains strong language (which may be unsuitable for children), unusual humor (which may be unsuitable for adults), and advanced mathematics (which may be unsuitable for liberal-arts majors).
