Needs - Wants - Demands

Just like a smart marketer, an astute systems engineer knows the difference between the three:

Needs - are basic requirements, like eating and going to the bathroom

Wants - are needs that become requirements for fulfilling basic needs, for example people want education to find a job, to make money to buy food to meet the basic need. Wants are shaped by the environment the client is in.

Demands are wants for specific products coupled with an ability to pay.

Marketers do not create needs. Needs already exist. People need to eat, move, dress and learn. Marketers only promote the idea that a burger, car, Jeans and private school will satisfy the client's needs, by highlighting the benefits the client will achieve using the product.