Watching Luis' expression change was probably hilarious. He went from neutral to looking very, very cross.

"Whoa, whoa, okay. No on the delusional and no on the primitive," he said, careful with his tone. Good first impressions, good first impressions... "And I am a biologist with an emphasis on microorganisms, parasites and pathogens." He mentally told himself to settle down. He had a point, he wasn't as experienced with all this futuristic garbage as he could be.

But really, you wouldn't go back in time and tell Galileo or Louis Pasteur that he was "hampered by primitive methods."