No matter the pressure or amount of effort a teacher put in a child , if the child's brain doesn't have all it takes to revive thinking, the child will always be backward.

This is true. Attimes, teachers ends up flogging them out of annoyance. But, i wish you can publish this in black and white and send it to some schools. Don't you think the impact will be much? @mesola, thanks ! But, can an adult also take those fruits to boost memory?