There are zero black dots.
They are white dots that appear black when not looking directly at them because of an optical illusion.
Assuming that the guesses in the comments are men (which are almost all wrong) then I assume that 'woman's logic' would be able to see through this tawdry trick.
Funny how misogynists tend to shoot themselves in the foot.
Surely there's a correlation between faulty critical thinking skills and angry scared men.
I'm also a dude, so, we're not all fools at least, just the dullards.