Occam's Razor ( often summarized as "the simplest explanation is usually the right one") isn't just good advice for science. It applies to frugality too. Looking for the simplest way (best value) to fulfill your financial values creates great financial success.
You want to see a movie for date night. What is the simplest way to get your goal?
A. Full price new release movie $15.78 per couple.
B. Netflix/Amazon Prime $6$ total.
C. Dollar movie theatre for $2-4 per couple.
D. Redbox $1 per couple.
E. Movie from library $0.
Of course if you value privacy you may choose a on demand stay-at-home option or perhaps Redbox.
If you value novelty you could choose the full price new release option.
And someone looking for the cheapest way to be entertained would pick a movie from the library.
Any option is fine, but knowing your values simplifies your decisions.
Your vehicle won't start. So you could..
buy a new car
replace the engine
replace the starter
replace the fuel pump
replace the battery
charge the battery
or add fuel.
Which one is simple? Which one saves the most money? Which one usually is the culprit for a broken down car?
Occam had it right. Look for the simplest way ( lowest money and time) to get your values and you will be much happier.