It is said that 75 percent of an engineer s time at any given company is spent on fire fighting. We must reduce this number. There are three types of countermeasure we can apply to noises. That is, desensitize the design against noises. This minimization of noise effect is called robust design.
Nothing is wrong with the first two.
But it is always the most cost effective to work on Robust Design first, then on the first two. This is because to control, eliminate and compensate for noises will increase cost. When a VCR for home use came out in the late 70s, mechanical system to insert and eject a tape was not so robust. It used to get stuck, and consequently damaged the videotape. While the concept remains the same, today s product is much more robust, cheaper and lighter.