Unquestioning acceptance is no way to run your finances

Or this: "I often read of some big company becoming a substantial shareholder in a particular company. Is this done because they want the voting power to obtain inside company information?" Or this one: "Are you telling us to buy XYZ because you want to sell it?"

Yes, that's right. The stockmarket is a Machiavellian plot designed to take from the poor and give to the rich. It's all a conspiracy and you fell for it. Moohahahaha.

Actually I do occasionally wonder whether there isn't some supreme being that has us all brainwashed with an erroneous collective hysteria. There must be because some financial theories are, despite universal acceptance and implementation, costing us money and I can't help thinking we are perpetuating these bunkum hypotheses not because they add value but because we need them.

After all, as Captain Cook will tell you, discover any group of human beings, no matter how remote, and they will already have a god and a religion. It was not someone's idea, it is a human need, to huddle under an omnipotent being and a creed. To have all our biggest questions in life answered, not by logic, but by a figurehead and his teachings.

Net result, from religion to financial theory, our insecurity endows our ideas with vastly more trust and belief than they could ever mathematically possess or deserve. It has been going on since the depths of time and we have to occasionally stop and ask, "Are we doing it right?" It is too easy and, frankly, unintelligent to just not question accepted practice in any field especially in finance and especially in the current market when the theories aren't working.

There are a number of investment theories that run a fine line between adding value and adding nothing. For instance:

Set and forget. It took the GFC to teach us that this is nothing but a lazy investor's excuse for doing nothing and a lazy adviser's catchphrase for buying you a product and then not giving you any advice while they still get paid. That it rhymes has made it all the more compelling.

Diversification. Another lazy theory focused on hedging your ignorance rather than making you money. We need to make money not dull our failure, and therefore any success, by buying a lot of different things rather than a few good ones.

Portfolio optimisation. The efficient frontier and the efficient market hypothesis. The more academic the theory, the less likely it is to work in practice. A lot of financial academia is used as a platform for fund managers to market themselves to asset consultants who need the science to look smart when they tell the people with the money who to pick as a fund manager. But does any of it make anyone any money?

Compounding produces some great historic returns that dazzle us into buying products but only seems to work in theory, in hindsight and it almost never actually happens to us. You know the one, "If you'd invested one dollar in XYZ in 1961 it would now be worth blah blah blah." Well, we didn't, right, and the reason, of course, is that it only works if you actually do it, and almost no one does. Who has so much money they never have to touch it, ever? Compounding is the pinnacle example of marketing over reality.

Mean reversion it went down so it must go up. Dazzling logic that worked really well on Babcock & Brown and ABC Learning.

Average down - buy stocks that are falling. Clever stuff.

Dollar cost averaging - invest without caring when. Brilliant. Especially for the people getting your cheque. I could go on.

Astonishingly enough, animals don't have religion. Stupidity, blind faith and insecurity is, it appears, a higher brain function.

Marcus Padley is a stockbroker with Patersons Securities and author of sharemarket newsletter Marcus Today. For a free trial, go to marcustoday.com.au. His views do not necessarily reflect those of Patersons.