I am answering the question posed in the title. Deadrat is right when he gives a negative answer to the question posed in the body text.
"Optional" is not a good word here, because when backshifting is optional the two options are not identical and one will probably be preferable according to what you want to communicate.
Backshifting is optional only when the report is in the past tense and one of two further conditions hold:
1) the reported speech would be in the present tense if it were quoted directly and what it refers to remains currently valid (in this case, you may put the reported speech in the present tense rather than the past: he told me the Earth orbits the Sun), or
2) the reported speech would be in the past tense if it were quoted directly and it is clear that what it refers to was in the past from the speaker's frame of reference (in this case, you may put the reported speech in the past tense rather than the past perfect: he told me he ate it the day before).
The alternatives that may also be used are he told me the Earth orbited the Sun and he told me he had eaten it the day before.
Whether in either case you should backshift depends on issues such as style, emphasis, rhythm, voice, and pace. Is current validity relevant? Well it may or may not be. If it is relevant, how relevant is it? Does it matter what your narrator thinks anyway? In the second case, is the past in the past status of what the speaker refers to sufficiently clear, given your audience? Is there a relevant difference between ate and had eaten, given how you wish to convey the speaker's character or state of mind, your desired pace, and so on?
First the blogger mentions that 'its kinda wrong' then he says 'if you are struggling with back shifting stuff then there is no need to back shift the tense even if what is said is no longer true.'
What would you say to it ? P.S. - I am really sorry to bring up a same question. My only simple question is if suppose I'm narrating a past incident about John and he is 'no longer hungry' then can I colloquially or in written say/write : "John said that he is hungry." with a meaning that John is no longer hungry. ?
– iamRR Jun 26 '15 at 17:19As you say that even if one is not back shifting the tense then also its correct because people will understand the meaning anyway.
So if I happen to write a letter to you in which a sentence goes like -- "Yesterday John said that he is hungry."
You see, at the time of writing a letter John is not still hungry but I used 'is' because you said that people will understand the meaning anyway then by this logic it should mean that usage of 'is' is perfectly correct ? Isn't it ?
Please just a last help, I hope ! Thank you !!
– iamRR Jun 29 '15 at 17:15If John spoke last week, yesterday; even a few hours ago, passing time rules out “is”. That has nothing to do with whether in fact he is, or anyone could know he is still hungry.
To me it seems the only way “is” could really work would be if your hostess asked for a second time whether any wanted more food, and you reminded her "John said he is hungry”… which can only happen almost literally in the same breath; never after relevant passage of time.
– Robbie Goodwin Jun 13 '18 at 23:04