7 ms·
Straight from the mouth of Fama: “efficient Market Hypothesis is a model. All models are wrong. Some models are useful.” If you don’t/won’t understand the di
by Kon-Peki 1y ago
Straight from the mouth of Fama: “efficient Market Hypothesis is a model. All models are wrong. Some models are useful.”
If you don’t/won’t understand the difference between the real world and a model of the real world, there is nothing more to say.
- jxjnskkzxxhx 1y ago[flagged]
- Kon-Peki 1y agoHow’s this for a source? https://m.youtube.com/watch?v=bM9bYOBuKF4 https://m.youtube.com/watch?v=bM9bYOBuKF4
- jxjnskkzxxhx 1y ago[flagged]
- Kon-Peki 1y agoAre you saying Fama didn’t come up with the efficient market hypothesis? He got the Nobel prize for it. Who came up with it?
- jxjnskkzxxhx 1y agoI'm talking about the line you quoted. At this stage I'm convinced you're intentionally equivocating.
- eesmith 1y agoI did not find that quote in the linked-to interview. The closest is at https://youtu.be/bM9bYOBuKF4?t=148 https://youtu.be/bM9bYOBuKF4?t=148 "That's the statement of the hypothesis, but it's a model, it's not completely true, no models are completely true. They're approximations to the world. The question is, for what purposes are they a good approximation. As far as I'm concerned, they're a good approximation for almost every purpose." I think you've combined that with the aphorism commonly associated with George Box - https://en.wikipedia.org/wiki/All_models_are_wrong https://en.wikipedia.org/wiki/All_models_are_wrong . If the interview on YouTube contains your quote, then please link to or give the timestamp. I only skimmed the closed-captions.