Many times we see people being deeply involved in something but still are not able to get desired output. We doubt their efficiency but ignore their level of interest in doing the work.
Interest and involvement need to occur in conjunction with each other as one without other would not bring out the desired result. Anything we do, needs both our involvement and interest for attaining perfection.
A person who is interested but not involved would not reach the height of perfection, neither a person who although shows deep involvement but lacks deep interest in the subject would have goals unaccomplished.
Interest and involvement together can bring dreams into reality.