Imagine if you were missing from modern society for 44 years and suddenly re-emerged?
This is the situation one man has found himself in after being in jail since the age of 25 for the attempted murder of a police officer.
At the age of 69 New Yorker Otis Johnson was released back into society after completing his jail term.
Now, more than a year later, Otis speaks to Al Jazeera about what amazes him in 2015 and what he likes about the new age.
From the mystery of the iPhone to the array of coloured drinks and super sweet snacks, the world of 2015 is full of surprises for Otis Johnson.