Gordon Brown will today promise free laptops and broadband access for 270,000 low income families so that they can better follow their children's progress at school.
To make that achievable, he will pledge £300m of investment to help poorer families who might not otherwise be able to afford it.
Laptop: £400 (retail)
Multiplied by 270,000 = £148.5m
Apart from the fact that this is a bloody stupid idea (if you're a low income family that doesn't have access to a work PC, then you've got time to walk to school), it's also costing double what it should do.