Why Do People Spout Opinions on Warming, Stimulus, Bailouts?
I don’t. Why- because I am not QUALIFIED to have them. These are complex subjects that require lots of knowledge and the ability to make several successive deductions regarding that knowledge. If even some of your knowledge is faulty or one step in your deductive trail is flawed you will probably get a COMPLETELY WRONG answer.
Mediocre lazy minds don’t pretend that they have a worthwile opinion about whether a supension bridge could have been built better. Probably it is because there is too much risk that they will shown to be fools. But if they can be opinionated without encountering this danger some people think they have the right to spout nonsense.