Hi Jaysun_d7,
Well nice to meet you. May i ask for love and peace?

Well actually Photoreading Wholemind System is a learning system for a human. So it is just a system. I thought i cannot count limitation of a system which applied to a human as different human has different limitation of learning (That's why the adjectives like 'clever' and 'stupid' is born).
So the limitation is actually not caused by system, but by human minds, by human him/herself.
So if my friends ask me, "Why i cannot success with Photoreading Wholemind System? I would always smile and answer, "Why not? Minds are yours!"

P.S. I have experienced a question like this. My teacher asked me why the democratic system is failed in a country? I answered my teacher, "Why the democratic system would fail in that country? The other country is success under democratic system. It's not the failed system, but the failed president."
This is my answer for your question. No offence intended. I hope i can help you little. I am also love to be corrected if my answer is wrong or aggresive.
Thanks for the question.

Kind regards,
Kunagi