So, I was using this Mac in the computer lab, and the "v" key was broken. "No problem," thought I, "I'll just copy a 'v' from elsewhere and paste it wherever I need a 'v'." (The punctuation and the end of the previous sentence is correct.)
Little problem: to paste you need to hit cntrl-v, which you can't do without a 'v' key. And I couldn't paste with the mouse, because I was on a Mac and had no right click.
I'm sure this can be used as a metaphor for life: there are some problems which have solutions. But sometimes, the problem affects the solution also. For example, disease is a problem. The immune system offers a solution. But what if the disease is that your immune system is shot? I'm sure y'all can think of other examples.