Memory lossy compression, keeping us sane. Why on earth would evolution want us to remember last month what we did on 16th, when the day looked exactly same as

Memory lossy compression, keeping us sane. Why on earth would evolution want us to remember last month what we did on 16th, when the day looked exactly same as 15th and 17th? What about same dates but 15 years ago? Absolutely meaningless. Do novel new intense things in your life, at literally any age, and you will remember them very well, and the feeling of how much time passes will change dramatically, I call it personally 'adding decades of life felt'. When I did my 2 stints of 3 months backpacking all over India (and a bit of Nepal) around age 30, I wasn't prepared. Every day completely different than previous one, no strict plan just massive Lonely planet book and return flight ticket in 3 months, no phone, no credit card (2008 and 2010). After few weeks, I felt like I was on the road for 6 months. After 2 months... hard to describe by mere words - the entire life back home, didn't matter which part or when, felt like literal memory of a dream you had last week, very hazy, somehow it felt real since I went cca 1x a week into internet cafes to check emails and yes those were my parents writing back, but were they? It felt brutally distant, and Indian/Nepalese reality felt like the only truth, that always was and always will be. Literal different life with reborn moment somewhere on a plane there. I managed to recreate exactly same experience on a second visit, 100% since I behaved in same fashion. Much shorter stint in Tanzania afterwards lasting 3 weeks achieved milder effect of it - say it felt like 3-6 months on the road, its not linear how it scales. Did Kilimanjaro for 1 week, Serengeti/Ngorongoro another one, and last week on Zanzibar (way before it became cheap european holiday destination). Again, the key was novelty. I still remember so many events, people, places etc. from those trips like it happened yesterday. I came back different, and made changes in my life for better, much better. Looking back, it was literal life (re)defining moment. I don't think I can recreate it easily these days, it would have to be done without phone again. But going there into some luxury resort, none of that would happen, its not about distance but how far out of your comfort zone you push yourself out for a long period.