We recently terminated the services of an architect for our house and recently saw on a BBC program that a high percentage of architects can suffer from dyslexia. All of the problems we have had with this architect are those associated with dyslexia... and given that he was left-handed (which increases the probability of dyslexia greatly) it seems a reasonable assumption. I happen to have worked earlier as a teacher for challenged students and should have caught it (his staff appear to do a good job covering for him).

How does Dyslexia impact an architect?

"They have difficulty gleaning the meaning from spoken phrases, and following detailed instructions is usually a weakness" "Whether reading aloud or silently or listening to spoken language these students cannot recall important details of what has been said. They cannot process material that is read to them, and they may be unable to explain the main ideas of material, even when reading material they have written themselves" From

http://learningdisabilities.about.com/od/learningdisabi...cs/a/Dslxiapart1.htm
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In our case, because of health issues we were unable to make frequent trips to his office and had to rely on email (which was stated up front). We ended up with constant rework because he did not get it from written clear instructions (I was a professional technical writer for many years) -- of course, all of this rework was billed to us. I will spare you the rest of the nightmare for the moment.

I would recommended being very aggressive in dealing with any architect that they fully declare any disabilities that they may have (for example dyslexia - very high amoung architects compare to the normal population), see if they are left handed (very common with dyslexia) etc. You may spare yourself disappointment and excessive charges by doing so.

As a FYI, the architect's designs were beautiful in and of themselves BUT they were a complete failure to conform to the constraints that were stated on day one -- including almost 3x the cost per square foot (which was more than 2x the requested size!)....

Okay, I'll bite.
Your reason for terminating the architect was the failure to design a house at the requested size; hopefully not because of an ASSUMED learning disability?
It is acceptable to terminate a business relationship that is not fulfilling its agreements. It has never been acceptable to discriminate against persons with disabilities of any kind.
As an exercise in humor, replace the word dyslexia with the words "bleach blonde", and see how silly your argument is.
Lastly, architects are not contractors and have very little control over the final cost of the project. Having a professional estimator or a pre-selected builder on your team early in the design process eliminates sticker shock and helps with value engineering. That said, if the builder on the project team is replaced for any reason, be expected to get a completely different estimate from a new builder. The same is true if you replace your architect; a new architect to the team may want to revise the design based on his/her concerns of potential problems, or to modify the design per the homeowners' concerns.
As you may have guessed by now, I am writing this response for other readers who may need more appropriate advice on design vs. cost or design vs. desire.
ps- any mis-spelling is from lack of spellchecking rather than dyslexia. Can you tell from my message if I have an illness? A disability? An addiction? The color of my hair or skin? Am I straight? Gay?