Isaiah 47 - Babylon will fall despite her wisdom and knowledge

 
Isaiah 47 is message against Babylon. The Lord says "she" was his instrument to punish the sins of his people:

6
I was angry with my people.
    I dishonored those who belong to me.
    I put them under your control.
    You showed them no mercy.
    You placed a heavy burden on old people.
7
You said, “I will always be a queen.”
    You didn’t carefully consider these things
        or keep in mind how they would end.

Although Babylon receive power from the Lord against his people, she is guilty of showing "no mercy". Jesus says that his disciples should be merciful.
Babylon is secure in herself; she trusts its power:

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Now then, listen to this, you lover of pleasure.
    You live securely and say to yourself,
        “I’m the only one, and there’s no one else.
            I won’t live as a widow.
            I won’t suffer the loss of children.”
10
You feel safe in your wickedness
    and say, “No one can see me.”
    Your wisdom and knowledge have led you astray,
    so you say to yourself,
        “I’m the only one, and there’s no one else.”

If we were living in Babylon at that time, we were very prone to think like that: no one can destroy Babylon. Babylon had worldly wisdom and knowlege. It was similar to some bi tech company of today. However:

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But evil will happen to you.
    You won’t know how to keep it away.
    Disaster will strike you.
    You won’t be able to stop it.
    Destruction will overtake you suddenly.
    You won’t expect it.

despite its scientists, economists, etc.:

13
You are worn out by your many plans.
    Let your astrologers and your stargazers,
    who foretell the future month by month,
        come to you, rise up, and save you.
14
They are like straw.
    Fire burns them.
    They can’t rescue themselves from the flames.
    There are no glowing coals to keep them warm
    and no fire for them to sit by.
15
This is how it will be for those who have worked with you,
    for those who have been with you ever since you were young.
        They will go their own ways,
            and there will be no one to save you.