I encounter the following issue. Within a Word document, some 4MB in size, I have two pictures of very similar structure, each approximately 1MB in size. Yet, if I group these two pictures, the total file size increases by an extra 5MB. I have even extracted the two pictures into a new document: add one: file size of 1MB; add the other: file size of 2MB. Group the two pictures and save the file: 7MB.
Is this a strange instance of non-Euclidean arithmetic whereby 1+1=7?