to overturn; to capsize; to overthrow (government etc.); to reverse (decision etc.); to disprove (an established theory etc.)
to topple over; to be overturned; to capsize; to be overruled; to be reversed; to be discredited
to defy conventional wisdom
learn wisdom from the follies of others; learn from others' mistakes; (lit.) the toppling over of the cart in front serves as a warning for the cart behind