I appreciate this post and agree that the EA community should emphasize frugality more.

For many people, the money saved through frugality (net your donations to effective charities) should be invested to maximize long-term impact. I am a big fan of the Financial Independence (FI) community which offers excellent resources on investing, frugality, and values-based living. I've found Rebecca Herbst's work at Yield & Spread valuable, as she specifically bridges EA and FI principles. 

Seems like this will be a great event.  Thank you, Danielle and Rethink Charity!

Wonderful write-up, David. Thank you for this!

Could you expand on what you think is meant by: Unreliability of existing work in 'data-driven marketing'?