Economics, as I understand it

I never studied economics at school, so I sometimes feel a little bemused by the workings and terminology used. I have noticed a few things though:

When the price of oil goes up, the price of petrol goes up.

When the price of oil comes down, the price of petrol goes up.

When tax goes up, the price of petrol goes up.

When tax comes down, the price of petrol goes up. (Except in Sainsbury’s – the only garage I’ve spotted so far that isn’t taking the P, so to speak.)

The economy is booming, the price of petrol goes up.

The economy is in recession, the price of petrol goes up.

There is tension in the Middle East, the price of petrol goes up.

There is violence in the Middle East, the price of petrol goes up.

Peace breaks out in the Middle East, the price of petrol goes up.

The Chancellor is feeling jolly cheerful, the price of petrol goes up.

The Chancellor is feeling very blooming naffed off, the price of petrol goes up.

There is an ‘R’ in the month, the price of petrol goes up.

Did I miss anything?

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