Extending The Mind.
The discussion of the extended mind is mostly about location: Where is the mind? But if you simply add the dimension of time, then the question becomes: When is the mind? I.e., does it or more exactly some aspects of it exist beyond the individual's lifetime. DII says it does.
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1. My mind extends to this paper, a scratch pad if you will, where I am developing these ideas.
2. My mind also extends to my old notes on this subject. To what extent are these merely reminders of thoughts I can access in memory and to what extent are they externalizations of my thoughts and memory? And how is the difference significant?
3. Every writer has experienced that moment of doubt where he or she writes down a phrase and wonders, "Is this my idea or am I just remembering something I've read?" Knowing this, we wonder how different these remembered ideas are from our own. How different, therefore, are they from our cognitively accessible* works (e.g., books) of others? Or, to address the larger question, how can I accurately draw the boundaries in space and in time of my own mind?
* By cognitively accessible, I mean readily accessible for cognition (as opposed to instantly). Can we really differentiate between a memory that takes the better part of a minute to retrieve fully and a quick lookup (in a book, on the net) that takes about the same time?
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Some of the techniques of the extended mind are simply externalizations of techniques our consciousness employs within the skull, e.g., the ubiquitous do-list. Here, our conscious mind structures part of our memory into a list of things to be done (next, today, soon, etc.). Extending that list to paper or computer as I do every day is a simple demonstration of the extended mind. But, in fact, this internal utilization of memory is itself an example of the extended mind. In other words, these cognitive tools were first developed internally.