system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Why did Dr. Strange use sorcery to control the eye of agamotto when an infinity stone simply obeys the will of whoever wields it.

We've seen it a lot in the MCU: Infinity Stones don't require any particular skill to use. They obey the will of whoever is in their possession.   


Who ever held the mind stone in the form of the scepter could choose between mind control, forced sleep, or memory erasure (as implied by the Cap vs Cap fight), by simply willing it.   


Who ever held the space stone in the form of the tesseract could simply think of somewhere and teleport there without spells or sorcery.  


Same for literally any other stone, whenever Thanos or someone else uses a stone, you see them occasionally aim somewhere, and just think about what they want it to do and it does it. Gestures will sometimes be used to represent the action (like snapping, or twisting the wrist to rewind using the time stone), but while it's possible that simple gestures may be required to "activate the will" to use a stone, there's no evidence that they require any particular skills.  


However, when Dr. Strange uses the time stone, he does so through the eye of agamotto. We know that sorcery is needed to open and control the eye itself (the artifact used to hold the stone), and that spells can be used to prevent the eye from being opened ("it's a simple spell, but quite unbreakable"). But once the eye is open, why does Strange still need to use sorcery to control the Time Stone ? Why does he need to read books and study spells to learn how to bring that apple back or forward in time when all that's needed is to just have the stone and think about it ?
gpt
The Sceptre, Tesseract,, Universal Weapon, Portal generator, Eye etc are all devices that let you control the stone without having a deep knowledge of how it works.  Thee people that use a stone without an intermediary are Thanos and, Malekith very powerful and knowledgeable beings.