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One thing that computers are really good at
is repeating commands. As a person, you'd
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get really bored if you had to do the same
thing lots of times in a row. But a computer
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can do the same thing millions or even billions
of times and not get bored, and be able to
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carry that out really well. For example, if
I wanted to wish everyone on Facebook a Happy
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Birthday by sending them an email, it might
take me more than a century to actually write
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out all of those emails to everyone. But with
just a few lines of code I can have a system
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send an email to everyone on Facebook wishing
them a Happy Birthday. So that's what loops
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are and why they're valuable, and something
that computers can do very well. To get the
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bird to the pig in this level... rather than
drag three North blocks on to the workspace,
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you will use the "repeat" block. Drag the
"repeat" block on to the workspace and enter
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the number 3. Then drag the "move North" block
into the "repeat" block and hit "Run" to see
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if you got it right. Congratulations, you
got it!
