Traders love big round numbers.
They provide a talking point, and just by dint of their huge fat simplicity can sometimes seem to display a gravitational pull on the market.
Once reached, or breached, they can provide more fun as those stops placed around the figure get swiftly triggered, exacerbating momentum.
Popular right now is the idea that the ultimate fallout from the Brexit vote will help deliver a euro to pound exchange rate of 1.
But with EUR/GBP currently about £0.85, how feasible is parity anytime soon?
Not very, many analysts reckon.
Helping sterling weaken to one euro would be a more aggressive than expected easing by the Bank of England relative to the European Central Bank, argue pound bears.
But Bank of America Merrill Lynch says such policy divergences are unlikely to be so great that they deliver a 15p fall for sterling, especially since, against a number of metrics, the UK unit is not especially overvalued right now.
Further more, the market is already very negative on the pound.
As Capital Economics notes, the record net short positions in sterling futures represent “selling that has already taken place”.
Still, from the euro’s side there seems to be a growing view that the ECB next week may not deliver the aggressive easing the market expects.
If so, that may be expected to boost the euro, yet traders know the single currency sometimes can react counter-intuitively to ECB actions.