I Only Give Negative Feedback shirt

[Peter345]

Either i dont understand the meaning of this tshirt, or it shoud be a inverting opamp on it?
can anyone explain that to me?

greetings

[Mechatrommer]

opamp get the feedback from inverting input. if it doesnt give you the right output, then give it a negative feedback!

[Chet T16]

Nah it just highlights the fact Dave is a pr*ck, the design is just to make it look pretty 

[EEVblog]

Either i dont understand the meaning of this tshirt, or it shoud be a inverting opamp on it?
can anyone explain that to me?

Both inverting and non-inverting opamp configurations use the principle of negative feedback:
http://en.wikipedia.org/wiki/Operational_amplifier_applications
http://www.allaboutcircuits.com/vol_3/chpt_8/4.html

Dave.