And that is completely... BS....
Have scrub many a rough sawn board, and a few wayward glue joints over the years....The intent was never to actually "flatten a board>>" merely to remove the high spots, cups and bows...twisted boards, were the realm of longer, wider planes, like a fore plane. Really do not give a Tinker's D about 18th century stuff....more concerned about getting the next board(s) that come into MY shop as flat and ready to mill as I can.
Oh, and a Jointer Plane ( Gluing Plane as it was called) has no business being on the face of a panel...period..
Sorry people...I deal with Iron Bodied Planes....wooden bodies stay on the shelf..
BTW: what is the difference between a Stanley No. 40 and a Stanley No. 78? The 70 can also be set up as a bull nose.....otherwise, the bodies are about the same size...too narrow and too short to be much more than a Scrub plane...
The "Horned Plane" was from Germany...and came to America with the German Carpenters....who also carried Bow Saws on their shoulders. Irish folk like me? Were too busy digging ditches and Canals....to be a Joiner...
Some of us "woodworkers" are NOT stuck in the 1700s....something to consider, eh? ( those who don't LEARN from the past, are bound to repeat it, as the saying goes...at least in the era I work in,,,we have electric Lights....Warren still has to use Candle Light?