This concept is so thought-provoking and so potentially valuable, that it's worthy of its own article.
From Skin in the Game:
"Via negativa: the principle that we know what is wrong with more clarity than what is right, and that knowledge grows by subtraction. Also, it is easier to know that something is wrong than to find the fix. Actions that remove are more robust than those that add because addition may have unseen, complicated feedback loops."
"Systems learn by removing parts, via negativa."
"We know with much more clarity what is bad than what is good. The Silver Rule can be seen as the Negative Golden Rule, and as I am shown by my Calabrese (and Calabrese-speaking) barber every three weeks, via negativa (acting by removing) is more powerful and less error-prone than via positiva (acting by addition*1)."
"One of the best pieces of advice I have ever received was the recommendation by a very successful (and happy) older entrepreneur, Yossi Vardi, to have no assistant. The mere presence of an assistant suspends your natural filtering—and its absence forces you to do only things you enjoy, and progressively steer your life that way. (By assistant here I exclude someone hired for a specific task, such as grading papers, helping with accounting, or watering plants; just some guardian angel overseeing all your activities). This is a via negativa approach: you want maximal free time, not maximal activity, and you can assess your own 'success' according to such metric."
From The Almanack of Naval Ravikant
"I don’t believe I have the ability to say what is going to work. Rather, I try to eliminate what’s not going to work. I think being successful is just about not making mistakes. It’s not about having correct judgment. It’s about avoiding incorrect judgments."
"We know a lot more what is wrong than what is right, or, phrased according to the fragile/robust classification, negative knowledge (what is wrong, what does not work) is more robust to error than positive knowledge (what is right, what works). So knowledge grows by subtraction much more than by addition—given that what we know today might turn out to be wrong but what we know to be wrong cannot turn out to be right, at least not easily."
"Via negativa: In theology and philosophy, the focus on what something is not, an indirect definition. In action, it is a recipe for what to avoid, what not to do—subtraction, not addition, say, in medicine."