Location: Optics Lab
In 1700, ABCDEFG is etched into the ground in Massachusetts. Below is written the following:
| Jan 17, 1875, 1:11 PM | Caesar shift forwards by 15. |
| Sep 6, 1752, 11:20 AM | Caesar shift forwards by 8. |
| Aug 3, 1975, 9:04 PM | Caesar shift the second letter backwards by 8. |
| Apr 19, 1769, 3:15 PM | For any letter which is also in the word JOUSTING, replace it with the corresponding letter in HANDGRIP. |
| Oct 25, 1992, 1:49 AM | Replace the first letter with a copy of the fourth letter. |
| Apr 26, 1970, 2:32 AM | Replace the last three letters with OWN. |
| Feb 29, 1800, 2:30 PM | Replace the third letter with C. |
| Aug 3, 1975, 9:05 PM | Rotate left by one letter (that is, move the first letter to the end). |
| Oct 25, 1992, 1:13 AM | Swap the first two letters; then rotate left by two. |
| Jul 17, 2025, 3:22 AM | Swap the fourth and fifth letters with the sixth and seventh letters. |
| Oct 12, 1920, 1:09 AM | Swap the fourth and fifth letters. |