Barty smiled again - oh and again. It was becoming a terribly common habit, which made him excited all the more. He wanted Evan to have the best time possible, to see good things in the world, not the ugly painful stuff. Everyone got some of it eventually, and it was so much nicer to see him happy.
"We can interact with them a bit," Barty answered with a chuckle, "but we in the pictures don't grow or change really - a moment in time." He smiled. Again.