When new ideas or products are tested on someone.
To become realistic; to become alert of what is going on around one.
Do something again, from the beginning, especially in a needless or inefficient effort.
To try to return to the past
To do something differently, after it has been done in the same way for a long time.
To continue to work well over a long period of time or to remain popular or respected for a long time.
To explain something to someone in a very complicated way, in order to impress them rather than help them understand.
Rarely, once in a very long time.
If you say that, you mean that it’s obvious.
To change your ideas or behaviour as the world or the situation changes.
To turn back the clock
Stand the test of time
Be somebody's guinea pig
It doesn't take a rocket scientist
Once in a blue moon
Come down to earth
Move with the times
Reinvent the wheel
Blind someone with science
Break the mould
