In older neighborhoods this can be much more challenging to figure out mathematically.

It is mathematically impossible for more than a fraction to succeed. 

If you want to look straight at the numbers, mathematics, you have a much better chance at succeeding by building a website, make it credible, drive manual traffic to your site (paid advertising/ppc) and convert leads into deals....vs D4D.

This is not an opinion, there is mathematical proof that this absolutely is not true!

It can not visit a website and determine using emotions and logic and user intent to see which website is good.So it uses a mathematical scoring formula that will score certain metric and then at the end, it adds up all these metrics to assign a score to a website for a specific key phrase.Let me give you an example.Back in the day when we didn't have all the fancy technology in cars, you needed to go 20 MPH to take a bend in the road because of the limited suspension technology etc. etc.

It really is as simple as a mathematical formula.

. 🤷‍♂️  Book Recommendations: My go to for RE finance related things: Real Estate Mathematics by David Lynn & Tim Wang.

Sounds like you might be "selling" or promoting your method of buy and hold as the optimum method, it might be for you, might be for others, it won't be, all things being equal, "better" than using funds for short periods of time and profiting and receiving all your money back to repeating that same function, it's financially and mathematically impossible.

Anything less than infinite time will produce a variance (this is not a likelihood or a possibility but a mathematical certainty!).

I'm thankful for mediums that have been created that already have mathematical relationships setup for people, but understanding the mechanics of the deal are where everything is won and lost!