0 past simple and past participle of presuppose
1 to accept that something is true before it has been proved:
[ + that ] You're presupposing that he'll have told her - but he may not have.
Investigative journalism presupposes some level of investigation.
[ + that ] All this presupposes that he'll get the job he wants.
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.