The structure should also use the elements of the waterfront to sustain itself...

Your Best and adopting " Fair -Dealing"as a standard to measure by will head you in the right directions- constant study will sustain your "footing"!

I was able to create an annuity that will sustain me for a bit of time.

Or, if we do see more a substantial crash in the economy (like in the disjointed from reality - mood ring for rich people stock market) we are living comfortably and below our means which will help us sustain our entire portfolio.

Property tax increases at 10% pa are not sustainable and this is going to hasten a property correction.

But I chose the route that was more money for now and also a bit more sustainable (in my opinion). 

It also means higher cash flow and an easier time sustaining a down turn.  

Chicago code is that EACH habitable room must be at a SUSTAINED temerature of 68 degrees F during the day and SUSTAINED 66 degrees F at night.

Cash flow is king but it is a sustainability factor with more linear gains than exponential ones.To that point, an architecture education will expose you to a network of individuals who would otherwise be off your path.

There is no underlying value add proposition to move and sustain a higher earnings or market valuation.