Dead or Ded ?

andrewhopkins

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Reading Bill Coopers "sell up and Sail", he makes a comment that Dead reckoning should be Ded reckoning as it is a reduction of the word DEDuced.

Is this right ? I was always taught and read it as DEAD.
 
Although usually written as DR or Dead the origin is "deduced" as correctly stated.
 
Where it's come from and how you spell it are different things. I've read a number of sources that cite the 'deduced reckoning' root of the phrase, and I like to think that is where it came from. However it's spelled 'dead', without a shadow of a doubt. Unless you want everyone you meet to point out your error... or enter into an interesting dialogue about etymology!

Regards, Mudhook
 
According to OED ...

Dead reckoning, first recorded 1613, uses dead in the sense of sure or unerring, first recorded 1592; e.g. dead earnest, dead shot.
 
I'm with you on this one. Surely 'reckoning' is by definition deduced?
 
Re: According to OED ...

This has got to be right, and Bill has got it wrong. A position fix is deduced from the information available. Or, in other words, reckoned by means of the information given. Deduced- Reckoned mean the same thing and therefore is just a repetition. What's the word for it? Too many drimks tonight!
 
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