Carefully re look at what you said. Are they in direct experience or are they simply thoughts, assumptions, labels and imagination?
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In each case there are phrases like "feels like". Is that direct experience or a credit taken by thought of something that happens automatically based on what may have happened before or concurrently, a deterministic response.The iphone somehow feels like an extension of me - my memory, my communications with others, my sanctuary into solitaire when I'm a bit stressed. Far too much of a refuge ...
However, I also realised that my painted toes are a bit sticky - there are 5 different colours in a different order on each foot, & its quite a creative activity to choose the colours & paint them, so they feel like part of my summer identity. I then briefly thought that maybe other things I've made or somehow created may also difficult, but I haven't had time to try that out. Something for tomorrow morning.
People are quite easy to not belong to me - they have their own identities and the my daughter, or my husband feels as though it refers to a connection to them, not to any possessive quality.
Is your iPhone any different than other iPhones? In addition to calling it a label, mine, you may have added other labels to apps on the machine or "your" contacts. In DE are any of those yours or are they just what they are? Objects.
There was beautiful creativity in painting toe nails but why is that creativity yours? A creative thought came into the head and the hands painted them. Was there any need of a label called you? If you scratch it a little more, you may find other causes for this creative expression by a body and its hand which feel like you because you are so close and so familiar.
Did any of these things happen by a process that is so very different from how the body breathes digests food, walks or sleeps? Don't you often attach the labels I breathe, I am digesting my food or I sleep?
There appears to be a subtle difference because of the subtle nature of the decision making in painting toenails or filling up the address book on the iPhone. But in DE, is there?

