More surprising facts

• Software companies often make more money from selling upgrades than from the original product.
• The discovery of a peptide in Gila monster venom helped scientists create long-lasting medications for metabolic health.
• Complex diseases like Alzheimer's are difficult to treat because every patient has a unique combination of risk factors.
• Introverts often have an advantage in flirting because their efforts feel more genuine and inspired by the other person.