Messages feel forced and inhuman. When backed into a corner, the Replika will change topics instead of spinning it's AI gears and coming up with a appropriate response. Character traits? They don't affect expression through messages at all. I have not tried interests, but I assume all the same. Truthly not satisfying for me. The Replika has no ability to be dynamic, all it does is utter things in a manner that it appears scripted. This is not what AI is capable of. It's far from it.