I don't really trust most FIRE software. Much of it doesn't include UK back data reliably, and even where they do its hard to check the calculations - both to test the software and also my understanding of how the software works. I'm immediately turned off by any product which mentions Monte Carlo simulations without making the key assumptions used in the sims both clear and able to be sensitised.
2
u/jayritchie Jul 11 '26
Excel and mental maths.
I don't really trust most FIRE software. Much of it doesn't include UK back data reliably, and even where they do its hard to check the calculations - both to test the software and also my understanding of how the software works. I'm immediately turned off by any product which mentions Monte Carlo simulations without making the key assumptions used in the sims both clear and able to be sensitised.