It could be. But people need rest at some point-- myself more often than others. [given how he needs a crutch to get around.] But in an area like this, it's much easier to keep track of where it's coming.

[then he leans back on the bench, cricking his neck.]

I noticed that it walks in a straight line, at a steady pace. All I need to do is look at where we've come from. [and then he points at a direction with his crutch, because he indeed remembers where they came from.]