A/B testing isn’t the ultimate truth in design—it’s often a flawed experiment with misleading results and false confidence. Instead of obsessing over data noise, designers should prioritize real user insights and meaningful design decisions.
Duolingo’s notifications are a masterclass in psychological manipulation, using FOMO and guilt to keep users engaged and reinforce habits. While effective for habit formation, they raise questions about whether they’re perpetuating a digital addiction.
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