Somewhat similar to the Shoeshine Boy Theory: https://quotulatiousness.ca/blog/2020/06/11/in-1929-the-warning-sign-was-getting-stock-tips-from-shoeshine-boys-an

Somewhat similar to the Shoeshine Boy Theory: https://quotulatiousness.ca/blog/2020/06/11/in-1929-the-warning-sign-was-getting-stock-tips-from-shoeshine-boys-and-elevator-operators/ https://quotulatiousness.ca/blog/2020/06/11/in-1929-the-warn...