Scientist here too. I liked your list and have read Rovelli’s books. Here’s another to add to the list: Time Reborn by Lee Smolin. Time Reborn - Wikipedia
Time is very interesting!
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Surely the perception of time is relative, but real time is also relative, that’s what all the physics we know is based on. If you’re in the mountains, time passes faster than on the plains, and if you move even further away from the force of gravity, time becomes faster and faster… and you even age sooner! As they say: sometimes reality is crazier than fantasy 
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All the classes I teach are 40 minutes long. My happiest teaching experience is when students, at the end of the period, when I tell them to loosen their bows, are surprised that class is over. That surprise is often accompanied by the sentiment that class should go on longer.
Not everything is rainbows and unicorns in my teaching world, however. In other classes, some students, who for whatever reason seem unwilling or unable to focus, have asked me, “How long until we’re done?” Part of my job is to try to motivate such students. I’m not always successful.
It is ironic that students most interested in dispatching with the school day may be the ones experiencing time the most slowly.
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As a person who was robbed from the first three quarters of her life, I experience keeping being a child helps. The key is in the OP’s quote: “so much experiencing and learning is going on that time crawls by”.
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When one buys an Octatrak for the 1st time. Time passes by really, really slowly.
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God, I know…I’ve probably created my own Time Distortion Field without me even knowing. Time really does fly. Might be the perception because getting older, or also the fact that we have so much to do and so much responsibilities when we get older. I hardly feel I have time for myself nowadays. Nothing to do -> time crawls (which can be very pleasant!). Too much to do -> time gains turbo + nitrous abilities. That wooden cabin in the mountains with stocked pantry and woodblocks for the fire seems very tempting. Ok, and generator 'cause synths don’t run on air, you know? My motorcycles, synth, books…all good ways make my mind at ease, but the tradeoff is that time turbo.
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try using that one next time you’re late in showing up somewhere important and see if it’s relative to the response.
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I tend to agree. Time is change and time is measured in change.
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It definitely drives me crazy thinking about it 
I am glad I am not a theoretical physicist or something. I can’t even imagine thinking about it that deep, at that level.
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Still doesn’t tell us whether or not friends are electric though does it?
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On the internet, all friends are electric.
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…time…is absolut!
it’s relativity is a natural given and it’s only subjective to humans…
this strange, ape like species, which made it aaall the way to the top of aaaaall food chains on such relatively short notice…
all driven by curiosity…and carried by humor…until u rfulfil ur evolutionary duty and start to reproduce…with kids, that next generation that’s always next to come, all xmas, all of a sudden, switches into heavy rotation…
and all ur endless summer childhood memories start fading out and away…
musical time is very relative. for some reason, when i listen to a high pitched sound that quickly sweeps down to a lower pitch, it sounds like it’s coming from the future
I’m old enough to remember a time before video cameras and phones where memories were memories, we now record everything and constantly looking back at recent memories on our phones etc and reinforcing that memory in our brains which makes it feel not that long ago, that’s my thinking anyway
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time is alive and consumed when it dies
That was my thought, too! Creating new experiences through travel, learning, changing habits.
I guess we enjoy some stability in our day to day life’s, but getting too comfortable means the years fly by like they are seconds.
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I prefer them eclectic 
Exactly. Variety is the spice of life 
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On my previous 10-hour flight to Japan, the flight took forever. I watched a number of episodes of Space Dandy, which is a really great show. But back-to-back episodes were just too much. Time seemed to drag - likely literally and metaphorically Space Dandy’s fault (definitely look the show up if weird space-time is your jam).
On this trip, I spent the flight reading and time really flew, no pun intended. They say that modern media kills your attention span, but I have no problem with long-form reading.
Pick your consumption habits carefully.
Perception of time is highly malleable. As long as you aren’t traveling at relativistic velocities, time is effectively absolute. Human perception is wibbly-wobbly.
More fun: the center of the earth is younger than the crust by about 2.5 years:
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just going to leave this awesome animation on this subject here:
(but, yes, it is)