For low barrier to entry products like facebook, dating sites, etc, I think companies are smart enough to build internal facing development only environments -

For low barrier to entry products like facebook, dating sites, etc, I think companies are smart enough to build internal facing development only environments - so as a developer you won't be "using" the dating site, just using/testing/dogfooding the internal "dev" dating site that has maybe a million robots and all the employees, contractors, partners of the company. If you haven't set down ground rules with a partner for working at a place like that, it's not a technical issue re: dogfooding, but a communication issue with your partner. For things like military jets, nuclear reactors and the like, many times companies hire ex-military jet pilots (test pilots like for example Chuck Yeager), and former nuclear power plant operators, or even university profs who developed/calculated the nuclear fission equations in the first place (ie Manhattan Projected hired basically all nuclear physicists in all universities in the US for the effort) - they also do "testing" - which could be a form of dogfooding.