size of word/document.xml

[Claude Brisson]

When I unzip a docx file and browse through the word/document.xml file, 
I see lots of things like:

<w:p w:rsidR="00000000" w:rsidDel="00000000" w:rsidP="00000000" 
w:rsidRDefault="00000000" w:rsidRPr="00000000" w14:paraId="0000004D">

all thorough the file.

Why not just write it like:

<w:p w14:paraId="4D">

with a default value of "0" for missing attributes?

Regards,

   Claude