"The Scholar" trophy (Unlock 45 footnotes)

[Pirelli913]

As guides have said, press  anytime the option is available during conversations. However, I feel this trophy may be either a little glitchy or misleading. You can check how many footnotes you've unlocked by scrolling over to Lore in the Menu and manually counting the lore you've unlocked in each section. It says unlock 45, but I was sitting at 49 right up until the final conversation with friends before you depart and during that series of conversations, I unlocked my 50th and the trophy popped. Just a heads up for anyone else confused or concerned that they didn't get it at 45.