Attila, I can understand why some people are not as good as me at some things, and why some people are much better than me at some things. I consider myself fairly average in most things, and gifted in a few. It's quite natural variation. I have some limits, and could never play football like Rooney, or paint like Michelangelo, no matter how hard I trained or practiced. BUT, through hard work in probably any area, I could reach at least the average, or able to do a particular task. Not everyone could, some people have ACTUAL disabilities that prevent them from that. The only reason you hear the words dyslexia and not disartia/disbikia, is because language, writing and spelling is so important to our daily lives.
Writing or reading is something that we learn, we aren't born with it. Some people find it harder at a young age, either because they don't have enough practice, or aren't tauight properly. Then the difficulty isn't addressed and it becomes a bigger problem.
You should look into how many people are 'diagnosed' with dyslexia, and ARE able to learn how to read and write without errors using various techniques. By the way I didn't say dyslexia didn't exist. I said it does, it is difficulty with reading and writing. That's all. The same as any other difficulty with any other learned skill. It exists. I said it was an excuse. And I stand by that. People give themselves excuses of why they fail all the time, and we're all aware of typical excuses in trading.
From Dyslexia Research Trust:
It makes no sense to talk of 'cure' when dyslexia is not a disease. Dyslexics simply have different brains that find reading difficult, just as some of us find piano playing difficult. However our society places such great emphasis on reading and spelling that dyslexia can undoubtedly present problems - most of which stem from others' lack of recognition and understanding.