Sometimes it matters

... what order you do the chores.

Optimal order:

1.  Water the sheep
2.  Pick up the hose
3. Trim crabapple tree
4.  Cut grass

Suboptimal order:

1.  Cut grass
2. Trim crabapple tree
3. Pick up pieces of hose
4.  Find a new hose
5. Water sheep

While dodging branches of the untrimmed crabapple tree you may fail to see the hose in time, run over it with the lawnmower and then be unable to water the sheep until you find a new hose.