Earlier quoted context omitted.
Anything involving the stock market is far from simple. And "don't spend money on stupid things" is more class signaling than financial advice. Who decides what is "stupid?" If it's important to you, why not estimate how much of an impact the purchase will have on your budget, and decide based on that? That requires math. I dunno, I do arithmetic in my head just about every day. I can't imagine engaging in any sort o…
I think what we're seeing here is a class difference? For some people, if the grocery bill is higher than expected, you just shrug and try to do better next time.
I knew I had crossed some class boundary when I found myself not paying close attention to the running total at checkout. There is a difference in mindset for people whose budgets are rounded to the nearest $1, $10 or $100 respectively.