The most important things is will.
What is achievable, understandable, and affordable? While these are absolute in their importance and relevance, they're all ultimately subjective. Your idea could be achievable, understandable, affordable, and solving a very important problem but the people who are going to fund you or approve your project might just disagree. How many projects have been rejected on basis that the projects is not achievable or understandable or affordable (even publicly, ie Shark Tank) but have gone to succeed because the originator never gave up? Many 🙂
Have a strong will and desire. Take criticism and learn from it. Change your plans when you need to. Repeat until you have succeeded.
Your project could be considered by the whole planet as achievable, understandable, affordable, and addressing many problems but it will ultimately fail the moment you stop believing in it and stop your work.
The project outcome is only as strong as the stages it takes to develop it. The final outcome does not weigh over all of the cost, length of time, and development that must be done to complete it. Like mentioned previously, I also believe that emphasis has to be placed on the "Quality Triangle". I think it summarizes all three important aspects of a project; the scope, cost and time it would take to complete. There are many companies that begin projects and have ended up in bankruptcy because the cost was too much or took way too long and too many resources to finish it. Hence why many companies buy out other (not the only reason), but many times it does happen. All of this comes back to easy laid out plan mentioned by Dr. Simon, planning and initiation. During these two stages is were careful consideration of all aspects of the project must be taken.
The most crucial aspect of a project, in my opinion, is that it is feasible. If a project's final objective is unattainable, then working on the project is a waste of time. Other features of a project are irrelevant if it cannot be completed in the first place. If a project is not feasible, for example, it is unlikely to be comprehensible.
