Hope English is OK. I understand your trepidation regarding your desire to keep contents for the least common denominator (文科系にも解るレベルに抑えて置く). However, a little variety may be beneficial for playback numbers as well. What made me register was your passing remark concerning a possibility for technical contents for future uploads, though. If you prefer Japanese for your audience to feedback, please let us know. My Japanese writing is a bit rusty after living in the States 54 years, but I can still, with extra time and effort.