I was once placed on a medication that went too far that direction... where I couldn't break out of the single thought path. Where driving was enough of a distraction, that where I was going would slip by, and I had to circle around multiple times. And I had once lost three hours of time and have a couple hundred tabs open in my browser as I started reading an article, then just kept stearing through, etc.

I was encouraged to stick with it for a month to see if it normalized, it didn't... I don't even remember the medication, but would never want to experience that again... I'll take the half dozen to dozen stray thoughts in my head at once... I'm far more effective that way. Though stress makes it hard to get/stay asleep.

Its worth pointing out that the effects vary by strain and some are better for some kind of work than others. For example, I don't think I could work well on most indica strains, but they may help me with creative problem solving (in smaller doses that don't make me too sleepy).

You guys are too funny.

Thinking slower will make me freak out. I need my mind to be clear and my brain going at top speed every waking moment.

If you were suffering from clinical anxiety as PTSD and ACE patients do then you might find cannabis to be the one thing that makes your mind clear of distracting fear and flashbacks. Assuming that all people and minds and drugs interact in the same way is a huge mistake.

Not in the context of drugs, but I find I am at my best when my mind is calm. I find it hard to be happy or productive when my mind is racing.

A clear mind and top speed thinking are things that contradict one another. The faster you think, the harder it is to concentrate on one thing.

As a person with Attention Deficit Disorder, I can attest. I am prescribed amphetamines to slow me down, not speed me up!