NO DEFAULTS

Summary from the TLDR Founders newsletter

No matter how obvious they appear, it's important to always question all assumptions. In many cases, what is known to be 'true' is only partially true, inaccurate, or simply the residue of a world that no longer exists. It's important to reexamine and reunderwrite your defaults from time to time. Carefully assess even those that seem to be working - these are the most dangerous, as most will not think to question them until it is too late.