A Goodreads user
A Goodreads user asked Brandon Sanderson:

In WoR Shallan notes that spren don't appear around dense groups of people, even if emotions are high. Why is that?

Brandon Sanderson You'll find out more eventually. There are several reasons, but imagine how a creature attracted to a specific color would respond if you dumped every color together in a big mess.
Brandon Sanderson
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