User contributions
- 14:12, 2 October 2017 (diff | hist) . . (+55) . . 1897: Self Driving (→Explanation: extended a bit)
- 14:01, 2 October 2017 (diff | hist) . . (+15) . . 1897: Self Driving
- 14:00, 2 October 2017 (diff | hist) . . (+328) . . 1897: Self Driving (→Explanation: actual use of captcha crowdsourcing mentioned)
- 11:49, 19 September 2017 (diff | hist) . . (+117) . . 1891: Obsolete Technology (→Explanation)
- 22:24, 18 September 2017 (diff | hist) . . (+76) . . 1891: Obsolete Technology (→Explanation)
- 22:23, 18 September 2017 (diff | hist) . . (+965) . . 1891: Obsolete Technology (→Explanation)
- 22:12, 18 September 2017 (diff | hist) . . (+22) . . 1891: Obsolete Technology (→Explanation)
- 22:05, 18 September 2017 (diff | hist) . . (+593) . . 1891: Obsolete Technology (+floppy disks as an example of an obsolete but still much used technology)
- 16:01, 22 February 2017 (diff | hist) . . (-1) . . 1802: Phone