keynesian multipliers 
are the various  dash board settings critica ?
no 
do macronauts need to consider the trade off between speed and efficiency ?
yes
the now infamous ziffle memo of december 08
got the answers to  this pair of questions
exactly  wrong 
speed of arrival atthe target  and target selection itself
were the essential tasks
state a pathway back given several sets of "other" spending patterns
---spending of course on just now produced products--- 
"other" ?
corporate household and foreign 
plus all levels of gub spending 
and gub taxing 
set a time line 
choose a middle varient and inject thru the transfer system
payments and tax rebates 
but only the first 4 quarters 
with a 2 quarter out adjustment  node 
and no additional gub spending 
the health system the  payroll system the retirement system
the unemployment and low income systems can all be engaged immediately
the revenues from any taxing system at all levels can be replaced
with federal borrowed funds 
each state getting say
cola corrected per capita payment 
ie equal real purchasing power
