NotADeer

Found the pictured thread

Why did you crop out the line directly under where he specifies why he asks?

Unusable? or unusable for gaming? There is a distinct difference in the approach to troubleshooting. It is important to know what games are being played. Native?, using Steam? or something else?

Yes

The Dragon book is often the holy grail for compiler construction.

In the class I took on programming languages we used Concepts, Techniques, and Models of Computer Programming

If it can be sent by mail it is probably not a Keter class object. Object class does not imply danger level

Tho if it randomly appears in mail it maybe is