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Not about drag'n'drop specifically, but all kinds of interactions requiring a mouse-button to be pressed while moving the mouse, or dragging while keeping the finger pressed to a touchscreen. Considering how error-prone that is, and how difficult it is to aim at specific targets compared to clicking or tapping, I am curious how it has become so common to make this mandatory?

Anecdotally in older software it was much more common for instance to click on a thing to pick it up, then click again to drop it somewhere. Or to click the opposite corners when drawing a rectangle instead of dragging from one corner to the other. But in software today those kinds of simpler interactions are rare. Was the shift, if it was any, based on user-studies or what caused it to be accepted to use dragging instead of clicking?

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  • I think that allow more complex clicking actions like double and triple clicking, or click and hold (then release) may have also contributed to the need to create other interactions with the mouse. It's an interesting question because I definitely remember the days when the click and drag wasn't that common.
    – Michael Lai
    Jun 15 at 0:51

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It falls into the category of direct manipulation, but there is debate in the HCI community about its usability Many researchers believe that direct manipulation is not useful for repetitive tasks. Effectiveness depends largely on the tasks and the audience. For example, the designers of emergent apps try to use DM to ease the learning curve for new users.

https://www.nngroup.com/articles/direct-manipulation/ https://journals.sagepub.com/doi/abs/10.1177/154193129203600408

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