What are the main challenges in data visualization according to Des Traynor?

According to Des Traynor, the main challenges in data visualization include the difficulty of making visuals that are truly useful, adaptable, and meaningful. He emphasizes that we're drowning in data and struggling to process increasing amounts of information from various sources. Despite the desire to visualize data attractively, he points out that it's hard to create computer-generated visuals that are both adaptable and worthwhile. Traynor advocates for clarity over cleverness, following the ethos that visuals must be clear first and clever second – and if something must be sacrificed, cleverness should go. He warns that poorly conceived visuals can confuse rather than clarify information.