The Scientists are very smart and unordinary people.
But what is the difference between "Theoretician" and "Practician" ?
Here is the answer !
1. When "Theoretician" DO NOTHING Everyone thinks that HE IS THINKING.
2. When "Practician" IS THINKING Everyone thinks that HE DO NOTHING.
You can Video version of this joke on my YouTube channel:
https://www.youtube.com/watch?v=SezI-IR3Bxg