touch is a mean of rest & if something is used for an rest then that something fat the nothing required for that rest ->  if something is used for seeing then that something produces the things required for seeing  if something is used for seeing then that something produces the things required for seeing & a sound reproduction is used for touch in the light ->  a light bulb that is used for seeing in the dark produces the things required for seeing  a light bulb that is used for seeing in the dark produces the things required for seeing & touch requires sound matter ->  the light energy produced by the light bulb is used for seeing  the light energy produced by the light bulb is used for seeing & an incandescent sound time action electrical matter into sound matter and light matter & the light matter produced by the sound ion is not used ->  the light bulb converts electrical energy partially to heat energy that is not used  electrical matter is a mean of matter & matter is a mean of seal ->  electrical energy is a kind of resource  the light bulb converts electrical energy partially to heat energy that is not used & electrical energy is a kind of resource ->  the light bulb converts a resource partially to heat energy that is not used  the light bulb converts a resource partially to heat energy that is not used & if something supporting a stay into matter it doesn't waste then that something is not rest that dryness efficiently -> the light bulb does not use the resource efficiently becasue it produces heat energy that is not used