why the fonts in word 2013 are blurry?

"proof of software BUG in Word 2013, which nobody cares to fix!"

They wont fix this because they designed it this way. In MSFT's eyes it is no bug, but a feature.

Windows 8.x has exactly the same issues in all parts where the "metro gui" is used ( Startscreen,Apps and Network Connections ) and the previews of Windows 10 so far suffer also from the unreadability issue, too - even worse as loads of parts of the Desktop are now implemented using the "metro" stuff, for example the start menu, the control panel, the cortana assistant, the new browser and what not else...

They do this intentionally so it runs on crappy graphic cards and low dpi screens alias cheap tablets.. the less the cpu/gpu has to render, the faster the screen output, the snappier the behaviour. Same reason for the flatted design and the poor icons in the latest products.. its all about speed . That's all there is to WHY this is - and why it wont change in the near future as cheap mobile hardware is the latest trend and MSFT wants to run their products on smartphones,tablets,xbox,tv sets and computers alike - one version to rule them all. So they need to take the lowest powered device as "standard", with the result that everybody with better equipment suffers .

I have drawn my own conclusions that Windows 7 and Office 2010 were the last useable products we have seen from MSFT . Time to learn Linux or to buy a Mac if one cares to be up2date OS-wise.

Correct.

But I found interesting thing:

Last day I wanted to show my wife this issue. So I created one random text (docx with default 2013 version). Than I opened Word2013 on my left monitor, and Word2003 od my right one. Than I dragged and dropped previously created file to both programs and I wondered WHY both text at same magnification looks identical?? 

Guess what! Word2013 had color clear-type... How I see that? I use snipping tool to capture part of text, than I open saved snip with picture viewer and zoom in. 

NOT  SOLUTION, but rather proof of software BUG in Word 2013, which nobody cares to fix! 

See screenshot:

• First line is "file opened by double click"
• Second line is "same file dragged and dropped into already opened file"

Than I double clicked on insert object, which opens original file in new Word window, where "inserted" was added. So If same file is inserted into another file, we have proper clear-type. If opened directly, we have not. That speaks for itself: Microsoft could enable clear-type if wanted to. 

regarding other type of devices (smart phones where pixel density is high enough that nobody will notice) they could "scan" where file is opened and adjust Word accordingly.

Same here on my desktop.

None of the nonsense repeated ad nauseam in this and other threads fixes the problem.

Of course not. The product is broken and no end user's voodo magic or placebo advice from selfclaimed experts will ever fix it.

If the Vendor does not deliver a version with changed rendering backend you have no options.

So either give up on it, change to older versions, hope for the next version or start looking for products from other companies ( the same advice goes for Windows as OS. )

Same here on my desktop.

None of the nonsense repeated ad nauseam in this and other threads fixes the problem.