Not Two, Not One
The molecules on the outer edge of “you”, say the ones on the edge of the cell membranes of the cells that are on the outer edge of your eye, are just as enmeshed, electron-swapping-wise, with the molecules in the air around you as they are with the molecules further back in the cell wall. In other words, it is scientifically impossible to say where “you” end and “your environment” begins – from this perspective, it all seems to be one interconnected whole.