Hint: eyes don't "measure" infrared or ultraviolet quanta.(except maybe as a peripheral consequence)

So, in other words, you detect quanta by inference, not by direct observation, just as is the case with dinosaurs.

So, in other words, you detect quanta by inference, not by direct observation, just as is the case with dinosaurs.

No! My, you persistently evade the point. Perception of light requires about 100 quanta. Rods have been activated by single quanta.

The rods and cones of the human eye.

Rod Details

The rods are more numerous of the photoreceptors, some 120 million, and are the more sensitive than the cones. However, they are not sensitive to color. They are responsible for our dark-adapted, or scotopic, vision. The rods are incredibly efficient photoreceptors. More than one thousand times as sensitive as the cones, they can reportedly be triggered by individual photons under optimal conditions. The optimum dark-adapted vision is obtained only after a considerable period of darkness, say 30 minutes or longer, because the rod adaption process is much slower than that of the cones.

So, in other words, you detect quanta by inference, not by direct observation, just as is the case with dinosaurs.

As a matter of fact, we do not 'see' light. What we see is the light's reflection on objects. The light waves themselves we do not see at all. That is why you can be in a direct path in space between the sun's light waves and the lighted earth and still not see the light.