Gio Wiederhold PDM 26
Recomputation is needed
at the next time phase
past                                            now                                future
Re-assess as time
marches forward !
  A Pruned Bush 
Databases, . . .
Spreadsheets,
other simulations,
Msgs
sensors
 
1000
2000
5000
1000
0
100       
               600
1100       500
   200      200
                 0
          
1200
    66
 
time
1266 ?
?
?