Just as?

Well, you might say that since you're both human beings, and you can both distinguish among flavors of ice cream—for example you can both tell the difference between chocolate and vanilla with your eyes closed—it's likely that your flavor experiences are similar. But how do you know that? The only connection you've ever observed between a type of ice cream and a flavor is in your own case; so what reason do you have to think that similar correlations hold for other human beings? Why isn't it just as consistent with all the evidence that chocolate tastes to him the way vanilla tastes to you, and vice versa?

[What does it all mean , Thomas Nagel]

I want to ask about the word "just as" in my sentences. Is it mean "equally" or "entirely"?
and What does the word "it" refer to?
adn What does "the way" mean?

Thank you!