Zen master Seung Sahn and taoist Miao

[glance left]

I just sit on a chair, facing a wall . I was not gifted with flexible hips or knees. I don't lean back, though...sitting upright with spine erect and body relaxed, eyes open. I'd probably get some stern looks from your sensei
I do like immersion, you're right about that.  What are the other 2 roles?