E - evolution.
And this is an orange!

Don't worry if you answered incorrectly - only 2 out of 5 dermatologists immediately discovered the substitution. Can we say that these are bad doctors? No! It's just that the doctor's eye tends to fog up, and you might miss the hidden threat in the harmless nevus. And if the doctors are wrong, what can we say about us, ordinary people? Therefore, we have created a unique mole tracker that finds cancer not by photos, but by using biophysics and neural networks.