Also, the very next sentence uttered by the scientist makes this into a very reasonable statement. "But unlike a light bulb, there are some sources that actual

Also, the very next sentence uttered by the scientist makes this into a very reasonable statement. "But unlike a light bulb, there are some sources that actually emit light, one photon at time, and this can only be described by quantum physics." Single photon light sources are not, in fact, packed with photons.