Reply To: Best and Worst inventions in the world

significant ones, ordered by time, more or less, not dividing into bad and good:
wheel (Amerindians did not), alef-beis, paper, military horse saddle, growing beans with wheat (responsible for growth of Northern Europe and Ashkenazim), long bow, printing press, marine chronometer (enabled measuring longitude and actually going to an exact location), steam engine, electricity, cotton gin (American thingy), radio, federal reserve (economic stability), Kalashnikov, potential functions and support vector machines (first serious machine learning technology), PC, Netscape browser (rather than internet, making it available to non-geeks), altavista search engine (first working one), zoom