Based on the context and the answer, generate a question. 

Context: The wide sleeves of the black shihakushou gently fluttered in the air as the long arms swung back and front , the large hands still coarsely callused as ever . The footsteps were as always firm and steady , contrast to the almost hesitant - looking pace he walked up the stairs at . Nothing had changed yet at the same time , everything had changed .

Answer:

Nothing physical has changed but in your mind something did alter



How can " nothing " and " everything " happen at the same time ?