Tidus can appreciate the time Idia's giving to him - a stranger, who just got really excited about his idea! So the tone and posture doesn't rub off him wrong.

But the last of what he says - Tidus is quiet, and wonders.

"So you use magic and tech, right? He was telling me, back where he came from, they made these wands that anyone can use, even if they can't do magic." He raises a hand, like he might be holding an invisible wand, flicking his wrist.

"Is that something that'd help? Maybe even to check out, for yourself! Or some other magic-technology. I dunno if nosing at new tech's any fun."

For Idia, specifically. Maybe? Tidus just likes when tech works. Doesn't matter how it does.