Mistakes That Weaken Arguments: Hasty Generalisations

This is a free preview of a paid episode. To hear more, visit persefonecoaching.substack.comWhat This Looks Like* “My cousin waited eight months for a hip operation. The NHS is completely broken and beyond saving.”* “My neighbor’s son graduated with a degree in history and works in Tesco. University is a waste of time and money.”* “My mate’s business couldn’t find anyone to hire last summer. Nobody wants to work anymore.”One or two examples, often from personal experience or people you know, treated as proof of a universal truth.Why It’s ManipulativeHasty generalisation does several things:First, it treats tiny samples as representative. Your cousin’s eight-month wait might be unusual. It might reflect their specific area, the complexity of their case, or temporary staff shortages. It might tell you nothing about typical wait times across the country.Second, it gives undue weight to memorable stories over broader patterns. One vivid anecdote feels more real than statistics about millions of patients. Your emotional connection to your cousin makes their experience seem more important than data. But the anecdote might be the exception rather than the rule.Third, it shuts down examination of actual patterns. If one example proves the point, what’s there to discuss? Anyone bringing up different experiences or statistics gets dismissed as denying your cousin’s reality or making excuses.How This Plays OutSomeone claims benefits are too generous based on one example.Hasty generalisation: “My sister knows someone on Universal Credit who somehow affords designer clothes and holidays. Benefits are clearly too generous and people are gaming the system.”Reality: One person’s circumstances tell you almost nothing about whether benefit levels are appropriate overall. Are they working part-time and topping up with benefits? Did they buy those clothes years ago? Are they in debt? Is someone else paying for the holiday? You’d need to look at average benefit levels, cost of living, and whether benefits generally provide adequate income across hundreds of thousands of claimants.Someone claims planning rules are too strict based on personal experience.Hasty generalisation: “My brother tried to build an extension and got rejected three times over ridiculous details. Planning laws are completely insane and stop anyone doing anything.”Reality: Your brother’s experience is one planning application in one council area. Planning decisions involve thousands of applications monthly across different councils with different pressures. Was your brother’s extension genuinely reasonable or did it overlook genuine concerns about light, privacy, or overdevelopment? You’d need much broader evidence to conclude planning laws are too strict generally.Someone claims immigration causes crime based on local perception.Hasty generalisation: “My area’s seen more immigration over the past five years and crime’s definitely gone up. I see it happening. Immigration clearly increases crime.”Reality: Your perception of crime increasing might not match actual crime statistics for your area. Multiple factors affect crime rates - police numbers, economic conditions, youth services, reporting practices. Areas with high immigration sometimes have lower crime than areas with low immigration. Your area’s experience during one five-year period tells you nothing about whether immigration causes crime generally.Someone claims working from home damages productivity based on their company.Hasty generalisation: “My firm tried working from home during COVID and productivity dropped. Our manager could see people were slacking off. Working from home clearly reduces productivity and companies are right to demand office returns.”Reality: One company’s experience tells you little about working from home effects generally. Was productivity measured accurately or just perceived? Did the company provide proper remote working tools and training? Large-scale studies across thousands of companies show mixed results - some see productivity gains, some losses, most see little change. Your company’s experience might reflect management practices rather than working from home itself.What to Do InsteadPersonal examples are powerful. Use them to illustrate broader patterns you can demonstrate, rather than as proof in themselves.Bad: “My daughter’s teacher left because the pay was rubbish. Teacher pay is clearly the problem.”Better: “My daughter’s teacher left after five years. She said she couldn’t afford to live near the school on a teacher’s salary. She’s earning way more now outside teaching. I looked into it after she left and apparently loads of teachers leave within the first few years, and pay comes up a lot as a reason. Teachers seem to earn quite a bit less than other graduates in similar jobs. So what happened with my daughter’s teacher seems to be part of a bigger pattern with teacher retention.”Bad: “My uncle’s operation got cancelled twice. NHS waiting lists are out of control.”Better: “My uncle’s hip operation got cancelled twice: once because of staff shortages, once because an emergency needed the theatre. He ended up waiting nearly a year. I know he’s far from the only one, the waiting lists are huge now, millions of people, and quite a few have been waiting over a year. His experience is frustrating but it seems to reflect what’s happening across the NHS with capacity problems.”Bad: “My friend started a business and got buried in regulations. Government is killing entrepreneurship.”Better: “My friend tried to start a small tech company and the compliance costs were massive for such a tiny operation: thousands of pounds when there were only five of them. I think it varies by sector though, tech seems to have it worse than some other industries. From what I’ve read, small businesses do cite regulation as a major headache, though I’m not sure if it’s the main thing holding back new businesses or just one factor among many.”How to Respond When Someone Uses This on YouThem: “My nephew graduated last year and can’t find a proper job. Degrees are worthless now.”You: “That sounds frustrating for your nephew. What did he study? I know employment rates vary massively by subject, some fields like engineering have people snapped up, whilst others struggle more. And I think graduates still generally earn more over their lifetimes than non-graduates, though it obviously depends on the field. Your nephew’s situation is real, but I’m not sure one person’s experience tells us whether degrees are worthwhile generally. What’s he trying to get into?”Them: “I know someone who caught COVID after being vaccinated. The vaccines clearly don’t work.”You: “Were they really ill or just mild symptoms? My understanding is vaccines reduce your risk quite a bit but don’t eliminate it completely. They mainly stop you getting seriously sick rather than catching it at all. Your friend getting it whilst vaccinated is unfortunate, but I think most people who catch it after being vaccinated have much milder cases. What happened with your friend?”