The laser radiation is monochromatic, the atoms emit in a coordinated manner, since their radiation is induced. The laser beam has a small divergence angle.
The radiation of an incandescent lamp gives a continuous spectrum, the radiation of atoms occurs randomly, independently of each other. An incandescent lamp emits approximately evenly in all directions.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.