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5 4, 3, 2, 1 0.
Hello, I'm Kaz.
And I'm Yanli.
Hey, Kaz.
Why are we listening to this rocket launch?
Well, it's dramatic, but there's another reason.
I thought it could introduce today's expression.
Tell me more.
The expression is it's not rocket science.
It's not rocket science meaning something that's.
Not complicated or difficult to understand.
It's not rocket science.
For example, ok, somebody can't get the television to work and asks you, how do I switch this thing on?
You would say, it's not rocket science.
Just press on on the handset.
So there's nothing complicated about it.
You just press the on switch and away you go.
But is the expression is not rocket science only used for gadgets?
No, not at all.