Hi Jane; I am a little confused. There seems to be a reversal in your definition of blocks and units, compared to every other weaving "guru's" books and papers that I have looked at (eg. Madelyn Van der Hoog, Robyn Spady, Jette Vandermeiden and even Mary Andrews suggests it in "The Fundamentals of Weaving", where she breaks down various weave structures into categories). Should you perhaps let people know that there is another way to define these two important elements of weaving?

Hi Ruth, as a 4 year member of the guild, I do not see the necessity of that at all. Maybe you are just understanding her words differently. Every instructor out there has their own opinions based on their own experiences and education and we are free to choose whichever ‘road’ we want to take in learning this craft. I have also taken online lessons from the ‘gurus’ you mentioned and personally find Jane the best, most straightforward instructor of them all as far as deeply understanding the structures in the lessons. I also understand that may not be for everyone. Merry Christmas😊

Hi Brenda! I am not talking about teaching style at all. Jane is absolutely great!!! I am just talking about an exchanging of definitions in two basic structures - blocks and units. Here is a good site to help me explain: https://handwovenmagazine.com/block-weaves-and-unit-weaves/.
There it is stated: "Block weaves are structures in which groups of warp and weft threads can produce two different-looking interlacements, one that we identify as pattern ("figure") and the other as background (think about how you see a rose motif in some overshot drafts on a background of plain weave) ... Some block weaves, however, make the pattern and background interlacements with independently functioning threading and treadling "units". These units all do the same thing as each other to create either the pattern interlacement or the background interlacement, so you can thread many units of the same block next door to each other and weave many in succession ..." So here block weaves have the interlacement or incidental threads and units don't.
Jane on page 2 of her Units, Blocks and Profiles handout states the opposite: "Unit weaves may have rules like... you can't repeat a unit over and over gain because the float will become too long. Or, to prevent a long float you must insert an incidental thread between the units." "With Block weave structures the rules are cleaner, less fussy. Units can be repeated as many tines as you want without having to worry about incidentals..."

I have found, as of yet, no other author's documentation that states block weaves without interlacement (incidental) threads and units having them. I just think I would want to know there is a different, more standardized definition out there, wouldn't you, if you were a student, to avoid confusion for future weaving adventures? Merry Christmas to you too!