In the UK tax is deducted 'at source' by your employer for anybody employed. You have a personal tax code, which tells your employer how much tax to deduct and pay on you behalf.

You then have a number of allowances you can claim against if you are eligible, to reduce your tax, which issues you an updated tax code.

This is why governments need to get involved legislationing profits from AI work. Shareholders can't be the beneficiary of lower costs from AI when it means workers lose their jobs. There needs to be an AI specific tax, to support people losing their livelihoods.

Saddam wanting to trade oil in other currencies was at least a part in the build up to the invasion of Iraq. The Petrodollar is still a large part of the US's financial strategy.