Cybernetic is the describing word for cybernetics: the science of how information is moved around and used to steer a system — a machine, a brain, or a nervous system. The old Greek picture is steering a ship: you look at where you are going, then you turn the wheel.

Cybernetic is the describing word for cyberneticscybernetic是cybernetics（模控學）的形容詞形式： the science of how information is moved around and used to steer a system模控學是研究資訊如何流動、並用來操控一個系統的科學， a machine, a brain, or a nervous system這個系統可以是機器、大腦，或神經系統。 The old Greek picture is steering a ship古希臘的原始畫面是掌舵開船： you look at where you are going, then you turn the wheel你看著要去的方向，然後轉動舵輪。

A heater that switches off when a room is warm enough is a simple cybernetic idea; so is the way your body keeps its temperature steady. You meet the word in science writing and in films.

A heater that switches off when a room is warm enough房間夠暖就自動關掉的暖氣機， is a simple cybernetic idea就是一個簡單的cybernetic概念； so is the way your body keeps its temperature steady你的身體維持體溫穩定的方式也是一樣。 You meet the word in science writing and in films你會在科學寫作和電影裡遇到這個詞。

Though actually, everyday talk often stretches it to mean “robot-like” or “full of computers.” The science is older and wider than that. English first recorded the word in 1948, and it is about control and feedback, not only chips.

Though actually不過其實， everyday talk often stretches it to mean "robot-like" or "full of computers."日常說法常把它延伸成「像機器人一樣」或「充滿電腦」的意思， The science is older and wider than that但這門科學其實更古老、範圍也更廣。 English first recorded the word in 1948英文最早在1948年記錄下這個字， and it is about control and feedback, not only chips講的是控制與回饋，而不是只有晶片。

If you only need an internet word, cyber is the everyday one; cybernetic is the science word.

If you only need an internet word如果你只是需要一個跟網路有關的詞， cyber is the everyday onecyber才是日常會用的那個； cybernetic is the science wordcybernetic則是科學用詞。