Dave Bonta's short poem is about learning by trial and error, and it treats that idea with dry humor. In the first stanza, the speaker measures "all inches in a foot" and only then learns to walk. It's a funny reversal: you'd expect walking to come first, but here careful, almost absurd preparation comes before the simplest human skill. The title, "Learning curve," fits, since the speaker seems to be starting from scratch.
The second stanza turns on a wry image: an "appointment with the door." The speaker walks into a door, or at least has a painful meeting with one, and then stands still without complaint. The phrase "suffer no discontent" can be read as calm acceptance, or as a slightly dazed shrug. The mood is quiet, amused, and gently self-mocking. The speaker doesn't fuss over mistakes, and the poem suggests that bumps and bruises are just part of how we learn.