It's slightly wrong, proposal for improvement: Spectre fools the processor into running speculative operations -- ones that it usually executes "just in case"

It's slightly wrong, proposal for improvement: Spectre fools the processor into running speculative operations -- ones that it usually executes "just in case" and then throws the result away if it is not needed -- and then uses information about how long the hardware takes to retrieve the data to infer the details of that information.