Tweets for 20th April, 2019

https://twitter.com/michael_nielsen/status/1020717496301772802

https://twitter.com/patrickc/status/1020338680525774848

https://twitter.com/ErinEARoss/status/1116021215238320129/photo/1

https://twitter.com/stevesi/status/1116811140959490048?s=09

https://twitter.com/srajagopalan/status/1117295593070714880?s=09