One of the most important parts of human evolution and progress into the future is how the child is raised in the first three years.......
If you are the parents, then you have the task to teach the child everything you know, then after the child's personality is formed, the grandparents can contribute to the learning processes of the child. What is important is that the child is a part of the parents both physically and mentally. The child needs to have a progressive forward moving attitude before other values are instilled.
It is like a computer...... You first get the basic memory and function then you add the programs that make the computer what it is...... You want to install the programs that make the computer function at it's best. Later you can install obsolete programs that may or may not interfere with the basic purpose of what you have created.
You, the parent is the one responsible for teaching the child the basic values the child will have for the rest of his or her life...... That is a big responsiblitiy. At some point in the child's future life they will have the ability to alter or continue with what tools for life you have given them.