If you neglect this categorization, and allow things of different meanings into the same visual or mental grouping, you will tend to go psychologically numb to the contents. If you put reference materials in the same pile as things you still want to read, for example, you’ll go unconscious to the stack. If you put items on your Next Actions lists that really need to go on the calendar, because they have to occur on specific days, then you won’t trust your calendar and you’ll continually have to reassess your action lists. If you have projects that you’re not going to be doing anything about
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