This is less of a blog post, and more of a collection of Friday thoughts that occurred to me on my morning run. Last night I was livestreaming some work on a new moss blog post in which I describe the use of Look-Up Tables (LUTs) as storage elements on an FPGA (this will be published in a few days). However, I ended up spending the majority of the time scouring the internet for documentation on the relationship between 5-input LUTs (LUT5) and 6-input LUTs (LUT6) on Xilinx 7 Series FPGAs.