I haven't done a Thought of the [undefined period of time] for quite a long time. So much so that when I started using labels I completely misapplied the Thoughts label (fixed). Most of them were from before Blogger even had labels.
I also hadn't posted them because I had typed out a few and lost track of them. I wanted to put them in chronological order and calculate the undefined period of time. Screw that. Here's a scanned one from 2005:
Previous undefined period of time:
Time of thought since #8: 2 months, 5 days, 6h56.
Time of posting since #9: 4 years, 11 months, 16 days, 14h23