If you want them to fully engage with you, then you can't possibly ask them any questions which require any kind of meaningful thought. The human brain can't th

If you want them to fully engage with you, then you can't possibly ask them any questions which require any kind of meaningful thought. The human brain can't think deeply about a topic while also holding an attentive conversation with someone. The only difference is that the disengagement for a phone is extremely visible, whereas it's usually just a slight "tell" when they're thinking deeply (the eyes roll to the corner and they squint slightly, for instance). They're still disengaging, though.