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A Chinese proverb states that "a picture is worth 1000 words"... it may even be worth more. Expanding on this point, this talk goes beyond aesthetics by introducing data visualization as a powerful tool for data exploration and knowledge communication. However, although data visualizations can be used to make story narratives more apprehendable and statistics easier to digest, they can also be used for deceit, misinformation and even propaganda. The negative impact of storytelling through data will be a prominent part of this talk where we will cover how misinformation can prevail unintentionally by misinterpreting the knowledge extracted from data, and intentionally by “fitting” the visualization to the message that must be conveyed.