What perceptual principle allows you to perceive the image as either two faces or a vase? 
Definitions:
Focused Message
A clear, concise, and specific message intended to communicate a particular point or idea effectively to its target audience.
Activist Campaign
A coordinated effort aimed at promoting or resisting change in social, political, economic, or environmental issues.
CSR Campaign
A strategic initiative by a company aimed at promoting and implementing socially responsible behaviors and practices, often focusing on environmental sustainability, community engagement, or ethical governance.
Crowd-Speaking Platform
An online platform that amplifies messages by allowing a large group of people to share a single message simultaneously on their social media accounts.
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