We sometimes say “The probability of blah-blah is milk”.
We can use not only milk but also the image of rich.
For example, sauce ,yogurt ,and sulfuric acid.
In adiition, if we say “The probability of blah-blah is water” which mean “The probability of blah-blah is very low”.
And lastly, there is very unique case. Nous disons sometimes “The probability of blah-blah is dinosaur”. because dinosaur’s spittles may be very sticky like milk or sauce.
Q. How much correctly is the theory that Izawa takushi is a lighthouse student？