Memory Fragment 5

The forgetherealone site was updated with memory fragment 5. Except there was no puzzle. Only the usual way to submit the solution by emailing eno.laerehtegrof|tnemgarf#eno.laerehtegrof|tnemgarf with a subject of "Fragment 5".

We submitted Fragment 4:

THESHATTERAPLACETOPASSBETWEENREALITYSENDTHROUGHONEOFTHEFRAGMENTS

and the response was:

2

We assumed that the response was telling us the number of correct letters, so with a large spreadsheet we narrowed it down. First we did A…A through Z…Z to get the amount of each letter in the message:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Total
4 0 2 6 6 2 1 1 6 1 1 2 1 8 7 1 0 4 4 5 1 0 1 0 0 0 64

Then we narrowed it down more. For example, since there is only one "P", and the response to

ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

was

1

we knew the "P" had to be in the last half of the message.

While doing this we also got

16 attempts remain until response type shifts.

And on our 17th guess from there, the response type did shift:

XXLLLLLLLLLLLLLLXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
1/16: 1152921504606846976

The "1/16" changed to "2/16" on the next attempt, giving us a countdown of only 16 more guesses.
The large number when displayed as a 64-bit binary number:

0000010000000000000000000000000000000000000000000000000000000000

Told us that in that guess, everything was wrong except the letter in the 6th position.

We combined the knowledge about letter-count, wrong letters, English language (some help from nutrimatic), topic (the past fragments), and some solid guess-work to narrow in on the solution:

ITALDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDONTHEPROJECTALONE
1101010000100000000010010000000010100000000000011111111111111111
IT L D    D         D  D        D D            ONTHEPROJECTALONE

ITILIDNNNNDNNNNNNNNNDNNDNNNNNNNNDNDNNNNNNNNNNNNONTHEPROJECTALONE
1101010000100010000110110010000110100000100000011111111111111111
IT L D    D   N    ND ND  N    ND D     N      ONTHEPROJECTALONE

ITCLADIIIIDIIINIIIINDANDIINIIIINDEDIIIIINIIIIIIONTHEPROJECTALONE
1101010000100010000110110110000110110000100000111111111111111111
IT L D    D   N    ND ND IN    ND DI    N     IONTHEPROJECTALONE

ITFLEDFROMDARKNESSANDINDOINGSOUNDIDITSOWNCREATIONTHEPROJECTALONE

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