Knowledge = Miracle ??

Can someone tell me about the connection between "knowledge" and "miracle"???

On last thursday, my religion teacher explain to me about the people who got the title as a saint based on the DVD he showed in his laptop/notebook..

The DVD tell us that only a people who can show a miracle could to be called a "saint"..
example ;
Leprosy disease was kind of dangerous infection that if someone got this disease, he would die not even longer..But in facts, there is someone who cared about this problem and show their interest by serving the ill ones..At last, they got the title as a "saint"..Is it a miracle??

The other facts, from 25 January 1873 until today, from the invention of doctor Amuer Hansen until the research of modernized technology, we know that there is a medicine to cure this disease..Is it a miracle or a knowledge??

Can we call the finder of this disease's medicine as a "saint"??

Please everyone who read this blog to answer my Question above..
Your opinion would be greatly appreciated..

basic talent..??

3 weeks ago, I saw someone playing the piano clearly.I asked every people that is near with me, "How can he/she play it well??". Then most of them answered, "it's his or her talent".

from the example above, I make a conclusion that for playing the music instrument well, we need a talent.But if no one invent those music instrument, we couldn't know that there were much talent in playing those music instrument..

So, everyone who read this blog, please answer my question. "How many pure talent are there in the world and what are them??"