2011 Math Planning 
Random Roger's Retirement Planning
DECEMBER 1, 2023
Part of the math that determines options premiums is the risk free rate of return from T-bills. Building a plan based on assuming an 11% payout forever is really going to hurt this guy if that is what he is saying. Keeping up with the broad stock market is not one of them. Assuming an 11% payout in perpetuity is a very bad idea.
The Better Letter
DECEMBER 30, 2022
We had kept an old 2011 Honda for us to use when we’re east. We checked the maps, did the math, and determined that, if all went well, we could drive from BWI to San Diego in about 40 hours of driving time. Plans change. Plans – even great plans – get blown up. We wanted to go! Stuff happens.
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The Big Picture
SEPTEMBER 19, 2023
One, one is true and I’ve always said is that I wanted people to stop, ask if I could doing math. And no one asked me if I can do math anymore with a degree from Booth, particularly in econometrics and statistics. So people really ask you, you take French and can you do math. Two reasons. Some don’t.
The Better Letter
DECEMBER 15, 2022
This is the best thing I read this week (it combines magic, music, mystery, and math); this is the best thing I saw. Issue 133 (December 16, 2022) 1 Investors with shorter-term time horizons and cash needs should, of course, plan carefully for the very real potential of near-to-intermediate-term drawdowns. The saddest. The sweetest.
Mr. Money Mustache
MAY 20, 2022
But in the Mustachian Era (the years since 2011 when I started writing this blog ), there has only been one: the 2020 Covid Crash which only lasted about a month. It’s fun math – a 20% drop in prices means you get 25% more shares for your dollar, and a 50% drop means twice as many , or 100% more shares per dollar invested.).
The Big Picture
JULY 19, 2022
Really, what I would think is getting to my natural home and that happened in 2011. ! So, you wrote the prior book a decade ago, 2011 the “Expected Returns.” And so, it’s very sort of, I don’t know, math oriented or algebra-oriented type of thing as opposed to great stories which drive most investment passions.
The Big Picture
JANUARY 9, 2024
So like a component of it was like the standard derivatives math, right? And so like, you know, I got there and I learned derivatives math, right? It was derivatives math, it was like working with the traders on like risk management. And so my plan was actually to quit and not do anything and figure out what my next step was.
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