A/N: I wrote a couple lines in a story and got hit by my science side.
Background: Lots of crest powers for everyone...
Izzy had his arms crossed and was gazing at them intensely the moment TK and Kari entered the room.
Kari blinked at him. "Do you need something Izzy?"
He looked at them with discerning eyes.
"This whole light and darkness thing," he answered firmly. "I know that there's physically manifested light and darkness, but scientifically, it makes no sense."
TK frowned. "Since when has much of the Digiworld made scientific sense?"
Izzy snapped his fingers irritably. "That's the thing I've been thinking about! See, Tai can make fire appear, and I bet what his power probably is is that he somehow manages to cause chemical reactions in the air – probably oxidation – which creates the flames he has. Then there's Davis, who perhaps is just changing the amount of electrical charge on both his target and wherever he wants the lightning to sprout from, so that the electrons just shoot across. Joe probably just takes water molecules directly out of the air and condenses it into a liquid form, though by that logic he should also be able to slow the molecules down so it crystallizes into an ice form, which he can't do. But what I really don't get is how light and darkness can be a physical manifestation when technically, darkness is just the absence of light, and light is made up of photons, and as we know it in terms of visible light, it's just electromagnetic radiation with a wavelength between about four hundred and eight hundred nanometers."
Kari and TK looked at each other.
"Maybe we're just shooting photon beams?" she suggested, trying to sound helpful.
"Or maybe you're reading a little too far into this?" TK supplied.
Izzy threw his arms in the air. "Not to mention that Ken's just doesn't make sense at all! Mimi's shouldn't be able to happen! Yolei and me can probably read the electrical signals between neurons and translate them differently, and Sora just gets to move air, but if that's the case then she can move individual molecules, which means she should be able to do the exact same things as Tai and Joe, which we all know she can't, then Cody apparently has the force or something, I don't even know how to explain Matt's, and Nicole's like a mutant so she doesn't count. Then there's you two with your actual crest powers, of which only TK's is technically possible given relativity, and since Kari doesn't have anything time based in hers, I don't get how it works! This is so infuriating!"
"...uh."
Kari reached over and tapped in morse code behind TK's back.
'Can we escape now'