# Feynman’s QED: Photons travelling faster than $c$

I was reading though a Phys.SE thread on Feynman’s QED and FTL photon travel over short distances where the most popular answer explained how Feynman was not implying photons can travel faster than the conventional speed of light, and said they would be interested in a direct quote of Feynman referring to photons. I am about to start undergrad phys so I am curious as to a heuristic explanation of this as Feynman says on page 89 of QED:

‘There is also an amplitude for light to go faster (or slower) than the conventional speed of light’ ... ‘It may surprise you that there is an amplitude for a photon to go at speeds faster than conventional speed,$$c$$. The amplitudes for these possibilities are very small compared to the contribution from speed $$c$$; in fact they cancel out when light travels over long distances.’