Can I be told what is meant by this sentence in some other way?
X falls into the same essence that is at the heart of Y. (Source)
( What is meant by "to fall into the same essence" and "the essence that's at the heart of something" )
[[ The paragraph which the sentence is located in the main text: (it's technical though)
Physical protection of any facility maintains the same fundamental requirements: You perform a threat analysis of your site, then you design a system that involves equipment and procedures, and finally you test it for adaptation. The system itself typically has a number of elements that fall into the same essence that is at the heart of protection: deter–detect–delay–respond. ]]
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Welcome to Ell. I think you can furthur improve your question by addin more context or providing a link to the source of the quoted sentence. – Cardinal Aug 20 '16 at 13:30
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I agree that more context is needed. At the moment, it's very hard to tell what this sentence means and it looks like rather bad writing. – David Richerby Aug 20 '16 at 13:37
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2Your text is either from a non-native speaker or it's someone with limited language skills unsuccessfully trying to use a register he's not very familiar with. Almost certainly what he's trying to say is something along the lines of There is a characteristic which is central to Y (i.e. - it's the essence of Y, at the heart of Y), and X has that same characteristic (i.e. - it falls into the same category as Y). – FumbleFingers Reinstate Monica Aug 20 '16 at 13:54
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1(I found and added link to original source. It's just bad writing.) – FumbleFingers Reinstate Monica Aug 20 '16 at 14:00
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1You can paraphrase it so: A fourfold strategy is at the heart of any system which is designed to protect: deter, detect, delay, and respond. – Tᴚoɯɐuo Aug 20 '16 at 17:46
The author is saying there are four considerations at the heart of "protection" (in general)
deter
detect
delay
respond
He goes on to say that the design and evaluation of a protection plan ("X") for a physical asset, e.g. a building or a castle, needs to take into account ("fall into") these four essential criteria ("the essence").
