It help you understand and identify things better.
Like, in my cass answering this dun question!
"Why should that mnemonic device be changed?"
okay so like you know the order of planets why should it be changed-
A mnemonic device is a trick to help you remember something. For instance, "Every good boy does fine" is a mnemonic device for remembering the notes of the treble clef in music.
Igniting is the correct spelling.
That is the correct spelling of "trampoline" (equipment on which you bounce, for exercise or sport).
The correct spelling is vacuum (an empty void, or a suction cleaning device).
Inverter is the correct spelling if you are referring to a device that converts direct current to alternating current.Invertor is the correct spelling if you are referring to a muscle in the body that turns a limb.
Switch is the correct spelling (a change, a device to turn electric current on or off).
That is the correct spelling of thermometer (temperature measurement device).
That is the correct spelling for "communicator" (a speaker, or a Star Trek device).
The correct spelling is "vehicle" (a transportation device).
Igniting is the correct spelling.
The correct spelling is "clock" (timekeeping device).
The correct spelling is apparatus (a device, or mechanism).
The spelling is "emulator" for an individual or an electronic device.
That is the correct spelling of the compound noun "treadmill" (stationary walking device).
The correct spelling is thermometer (device to measure temperature).
That is the correct spelling of "widget" (small part or device).
The correct spelling is "microphone" (sound input device).
That is the correct spelling of "trampoline" (equipment on which you bounce, for exercise or sport).