Like a million people out in the real world, I do not understand how strokes work in Inkscape, and do not have the time or dedication allotment to really learn.
I have through sheer act of luck and chaos succeeded in creating a path with a stroke as seen below:
This is not what I wanted. I wanted a stroke with equal width throughout, just like the way that is default in many other vector graphics editing programs like Adobe Illustrator or CorelDRAW.
I have thankfully found out how to switch off this functionality in this question. But I sometimes forget to switch it off, and get these kind of unwanted results. How can I reset the width of stroke to an equal value along a path?