0 the fact that you are unable to do something because you do not have the ability or you are too weak: --
[ + to infinitive ] the incapacity of the police to limit the rise in crime
1 the state of not being able to do something such as a job, usually because of an illness: --
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.
Можем да го завършим стъпка по стъпка, колкото и дълъг да е пътят и не може да бъде завършен, колкото и кратък да е пътят, ако дори не маркирате отпечатъка си.