The major crime of media is misframing as opposed to being wrong.

> The Economist was convinced by the false claim that Saddam Hussein was hiding weapons of mass destruction

The issue here is not whether or not the Iraqis had any weapons of any type, the issue is whether the US has a basic right to travel to the opposite side of the globe and invade random countries. One of the issues the anti-Trump crowd has right now coming down on his crazy and unprovoked attacks on Iran has been that it is absolutely an established pattern of US behaviour and he's well within normal practice. Trump is even claiming it is because of WMDs! Again! Eventually at least, after he tried a few other excuses first. "He's lying" doesn't cut much ice because that is pretty normal when the US goes to war and it usually isn't particularly subtle. The only difference from the Economist's perspective is how enthusiastically the reporters want to pretend they believe the obvious mistruths.

Anyway, that rant aside, the issue is more that the Economist is pretending that the unknowable is knowable rather than that they get it wrong more often or not than anyone else. It doesn't seem theoretically possible to predict the price of things more than "up", "down" and "assume it does what it always does". Mapping out the supply/demand curve and confidently forecasting how it could shift in the short term requires knowledge of all actors, their preferences, options and operational constraints. Even for a relatively superficial forecast. Who's got that sort of modelling firepower?