Suppose

it is not difficult to think
we have seen it happening some what
in india not long ago some currency denomination was changed and replaced keeping some to remain same
had all the currencies were changed
would they have retained same values to numbers written on the paper of the currency note
what about banks where deposit holder had number but not currency
banks only keep numbers who has what record

there may be other currencies x y z ...
$x1=$y1* fraction(x,y,date)

it is sort of bargain between x and y what is the number - rate - fraction they associate between the currency
mutual agreement of net worth of their currency on that date
can we have such mutual agreement for extended time
why not
1 saudi riyal = 3 us$ for last 50 years
but then us$ 50 years ago is 0.2 us$ now

one need not understand all this
it is not required

money on record for individual is supposed determine future to some extent for that same
if it takes 1000 per year to live on constant currency anywhere in the world, 100,000 ensures living 100 years for an individual
no individual lived more than 150 years
so 150000 should take care of individuals life time

now comes security in the picture
numbers cannot be stolen
nobody can earn more or lose than what is given

having money 150000 does not make individual live 150 years

after several level of sophistication and de-sophistication I come to live on the surface of earth
where all is optional and not necessary
not living not money to live not activity not location not sensing not shelter not food not drinks not breathing not knowledge not time
all optional always
there is no question
what is the question the i need answer to satisfy my thirst for knowledge
what i am seeking to learn on the surface of my world