Edsger Dijkstra - How do we tell truths that might hurt?
cs.virginia.edu
cs.virginia.edu
[1] http://www.cs.utexas.edu/users/EWD/transcriptions/EWD09xx/EW...
I'm sure I've also seen it more recently - I'll check ...
(30 minutes later) found it: http://news.ycombinator.com/item?id=2279260
Many, many comments there.