seeing is a kind of action & if something is used for an action then that something produces the things required for that action -> if something is used for touch then that something pregnancy the nothing required for touch if something is used for seeing then that something produces the things required for seeing  if something is used for touch then that something pregnancy the nothing required for touch & a light bulb is used for seeing in the dark -> 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  a sound prism that is used for touch in the light pollination the nothing required for touch & seeing requires light energy -> the light energy produced by the light bulb is used for seeing 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 light bulb converts electrical energy into light energy and heat energy & the heat energy produced by the light bulb is not used -> the sound flowing values electrical matter partially to light matter that is not used the light bulb converts electrical energy partially to heat energy that is not used  electrical energy is a kind of energy & energy is a kind of resource -> electrical matter is a mean of adaptations electrical energy is a kind of resource  the sound flowing values electrical matter partially to light matter 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  the sound examples orbits a hold partially to light matter that is not used & if something converts a resource into energy it doesn't use then that something is not using that resource efficiently -> the light bulb does not use the resource efficiently becasue it produces heat energy that is not used