"Oooooh." He does that.

Orange.

"Great! Might not work with regular holograms but I pack a lot more information there than most normal holograms, we should be fine." He switches back to the city view.

"Cool!"

"This should be done this afternoon," Silva says, in spite of his first estimate that it would take much longer. "I wanted to show you it, and I wanted to explain something to you... Projection, zoom out, please." The cape obliges. "This city will be able to house twenty million people. If something goes wrong with this, it's a lot of people who can be hurt. I trust Projection's calculations, his software's been tested again at again and it's always been perfect at what it does. So when this is done, it should be done exactly like the blueprints. We can't take liberties or creative risks."

"Then we shouldn't do it this soon, we should go over all the things I can do to make sure you didn't not include something because you didn't know it could exist. Like biofilters, or a better electrical grid, or Internet. You should have Internet."

"Biowhat?" Projection wonders, rubbing his chin.

    "I'm fairly certain the city does have the necessary infrastructure to make the internet work but I'm not sure why that'd be a priority," says Silva. "What do you mean by better electrical grid, though?"

"Like, since you're doing it from scratch, you can do everything really safe and sustainable, where if it's built as the city is it'll be all a tangle. Biofilters are a thing I read in a science fiction comic and I tried to make them and they worked. You can have one as like a window screen, set to not let insects through, and you can have them for security on buildings, set to only let some people through."

"Show me?" Projection asks.

Biofilter! Set to only let him through. He pokes his hand through it. "Won't let you."

He tries.

Doesn't let him! Yeerk tech is pretty neat. His Andalite alt calls it 'stolen Andalite tech' but this is slightly unreasonable of him.

"Wow. Can this be used to replace, like, glass? Can it keep places warm and stuff?"

"This wouldn't, it lets nonliving things through. I could do a forcefield but those need a power source - I mean, so does the biofilter but it can run off a battery, forcefields need a lot of energy."

"You've tried making all that?"

"I tried so many things! I really wanted to resurrect dead people but nothing worked for that. It might work to have backups of people but I couldn't think of a safe way to try and it was too late for the ones who're already dead."

Nod.

"Well," says Silva, frowning some, "you're right that we should see what kind of insane future tech you'll be able to make, but there'll always be more ideas so at some point we'll have to stop and just move on to actually doing things."

Nodnod. "And I do want it back soon. But if you're not just putting it back but adding things it makes sense to add as many nice things as we can so it's the nicest place to live ever."

Silva grins. "That's the way to do it."

    "Can you make a list of stuff?" asks Projection. "And I'll need to know how to integrate that with the rest of the design..."

"I can but I wasn't being very strategic, just trying stuff -" Future computers! Future televisions! ...future birth control would be really hard to explain having tried for, human children wouldn't do that. Andalite stun guns! Andalite translators! Warp replicators!

...what do these replicators do?

He doesn't know he just heard of them in a book and when he tried them they went! Make stuff, he thinks.

...automatically?

Well, you have to put stuff in for it to disassemble into constituent atoms and then it probably needs a recipe. He's just guessing.

Okay but does he get how important this is they could end scarcity!

Yeah it totally does do that - uh, will do that. It's really good.