# Giving something vs pointing to something

:::{exercise} Pointing to a collage vs recreating it
:label: advantage-of-pointers
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What is the advantage of pointers?

We want to answer this question using an analogy:
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A friend will celebrate her birthday and you are collecting birthday wishes and photos on a collage in your room. The collage is large and you want to leave it in your room.

How should your friends participate in the design of the collage?

1. Take your friends to your flat or say where they can find the collage
1. Recreate the collage if someone wants to participate in the design

What are the advantages/disadvantages of both approaches?
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