nanotechnology

Manufactured products are made from atoms. The properties of those products depend on how those atoms are arranged. If we rearrange the atoms in coal we can make diamond. If we rearrange the atoms in sand (and add a few other trace elements) we can make computer chips. If we rearrange the atoms in dirt, water and air we can make potatoes.

***** I am going to give you a simple example of the application of Nanotechnology...When we use very smooth and flat mirror, the rain drop will not stick to the glass. The same thing will happen to our car if the surface is of 'nanotechnology level of fine molecule and very veyr smooth, the no waxing, no washing is necessary. the dirt and any thing come in contact just drip and never soil our car.
That is a great step in science and can be use for preventive medicine.
How?
Virus are very small. For example, Corona virus is89 to 125 Nanometer in diameter. We can understand and control them if we have the knowledge up to ' the molecular' or Atom level.