Andrew Fogg from http://import.io discusses how to get a stranger to agree to something at #HNLondon
You negotiate every single day and it is the most important thing that you do.
Using scenario-based examples of persuasion and negotiation he covers: getting a meeting, getting a contract, getting an upgrade.
Slides available here https://www.slideshare.net/andrewfogg/2014-0520-hn-london-presentation