Just because something makes no sense to me, doesn't mean it isn't valid. It makes no sense to me that my rabbit eats his own excretions, yet the caecotropes---different than the normal downscaled-hay cannon balls rabbits produce---actually contain vital nutrients. So, in my human world, where a whole different set of dietary and hygiene laws rule, caecotrope consumption is repulsive and noxious, but in the rabbit domain, it's perfectly normal and beneficial.
Or think about the paradox of water: it can be ice, or snowflakes, or vapor, or liquid, yet it's always water, regardless. Or how about light being a wave and a particle? None of this makes "sense" to me on the surface, yet it IS a plain fact. (As a footnote: I have to trust scientists that light is in actuality a wave and a particle. I have not myself ascertained this. I have to assume they know what they're talking about when it comes to their domain.)
Or consider the first reactions, back in the days when someone first proposed the concept of microbes: people thought the guys holding those ideas were off their rockers. Yet, the microscope eventually proved them right.
My favorite example, though, is bases in math: in our everyday, Joe Blow world, 2 + 2 = 4. But only because we work with base 10. Had we for centuries worked with another base, then that simple equation would not "make sense" to us.
Or while we're dealing with math, how about that stumper "E=mc2"? To me, that makes zero sense (heh). But that's because I (a) have zero ability in math (even algebra was torture), and because I thus have (b) never taken all the types of courses that would PREPARE me for understanding that equation. I am basically an outsider, whereas Einstein and Co.---all the physics "initiated"---have a vast frame of reference within which that equation makes heaps of sense.
There's another way to approach this question: take someone who's color blind. If you rave about the beauty of a sunset to him, it won't make sense to him. (Now, if he gets ANGRY at you for your rapture, you really have to ask yourself WHY he does that. Is he jealous of your intact faculty and your concomitant broader base for joy and pleasure?)
Ditto for someone who's tone deaf: he will not be able to relate at all to my enjoyment of, say, this delicious piece. The sounds will make no "sense" to him at all. Which is perfectly understandable, given his truncated hearing. If he is rational, he will simply humbly acknowledge that his shortcoming in this area in no way negates the objective beauty of the music, or the reasonableness of my reveling in it. He will perhaps even wish for the day that science can rectify such tone deafness.
I think, too, of poetry: up until I was about 16, abstract poems made no sense to me. But after I read a certain one, which as it were served as the "key" to deciphering puzzling poems, I started understanding progressively more of the previously vexing texts.
So, whether or not something makes "sense" to me has a WHOLE lot to do with (1) how extensive my knowledge base is, (2) how intact my faculties are, and (3) my willingness (a) to have my brain cells exercised out of their usual paths, and (b) to believe those who are more qualified in a given field/topic than I am.
