What is a potential consequence of failing to obtain written permission for using copyrighted materials?

Failing to obtain written permission for using copyrighted materials can lead to legal repercussions, as it constitutes a violation of copyright law. Copyright laws exist to protect the rights of creators, and using their works without permission can result in lawsuits, financial penalties, or even restrictions on using their work in the future. This outcome underscores the importance of respecting intellectual property rights and obtaining the necessary permissions before using someone else's materials. Legal repercussions serve as a deterrent to prevent unauthorized use and ensure that creators are acknowledged and compensated for their work.