Because datevaluation practice is the proposed investment's substitute for the creation of added value with cash your money resources, canned in your creations of digital savings.
Yes because when you make a datevaluation you have to create units of personalized_webliving_savings running the web and always in cash phase (cashkeeping function). It means that you can "cashcall" at any moment and for free.
And when you choose to invest you feel 3 mainly problems :1. The process is in "cash_putting_out" mode ;2. The process is in "accepting risks" mode ;3. The process is in "competition" mode.
Now, when you choose to make datevaluation you feel 3 main advantages :
1. The process is in "cash keeping" mode ;
2. The process is in "refusing risks" mode ;
3. The process is in "web_dynamics" mode.