Many of my TODO items in Emacs org-mode have a DEADLINE defined in the future (e. g. Friday) and are at the same time SCHEDULED today so that I already know I have to start working on this task.
Then, this task will appear twice in my agenda. That's not nice but not necessarily a problem yet, but if then
- the task has assigned a time estimate for its duration and
- I go to column view with C-C C-X C-C to see how much time my tasks today will need,
the time estimate for this task is counted twice, so e. g. if the time effort estimate is 2 hours, I'll have 4 hours in my daily agenda, as the item appears as well as scheduled today (or in the past) as also with its deadline in 3 days.
How can I avoid counting an item twice?