They're referring to the "debt" bit of "technical debt". If you default on a loan then that means you did not pay back a payment that is due, at least not on time. If this happens enough in real life you might end up with bankruptcy. If you could default on a loan and suffer no consequences then it might happen more often!
rendall|5 years ago
I have not seen this use of the word "default" before. Does it mean "not touch"?
quietbritishjim|5 years ago