Andy Eppy

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Andy Eppy
Posted over 2 years ago
My observable universe
Hi Gordon Thanks for your comment. I didn't think we would be able to see back to the big bang - although presumably if we look away/back far enough you would see the early universe, and in every direction you looked! I cant seem to get my head around the fact that the farther away we look, the further back in time we see The universe is bigger now than it was, and expanding all the time So when we look away/back we are looking at an earlier smaller version of the universe?! Perhaps you would need to see the universe from outside of it to gain this perspective?
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Andy Eppy
Posted over 2 years ago
My observable universe
Hi Mary Thanks for your comment. I wasn't thinking about stars switching on, but rather seeing objects for the first time since their light has only just reached Earth. Although thinking about it some more that would mean receiving the first light they sent (unless they had somehow moved into a position nearer to us as an adult star) and so of course they would all be infant stars - you were ahead of me there ;) I think it is fair to say that things do exist before we see them for the first time, althouhg I have no way of proving the point, just an intuitive sense, but I wonder whether physics will eventually determine that our reality is in some way bound to our consciousness. Of course we can only experience reality via our perception but what I'm thinking of when I say this is the famous double-slit experiment, where that tricksy photon behaves differently when it is being observed than it does when it isn't - I mean it can't know its being observed, right? so the act of our observing in some way alters reality.....how?.....and why?.....
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Andy Eppy
Posted over 2 years ago
If you have NEVER been to Africa, when someone mentions "Africa" or you hear "Africa", what is the FIRST thing that comes into your mind?
Hi Mary I suspect I am a victim of media manipulation. A constant barrage of pictures of displaced peoples, in desperate need, starving, sick.... When I think about other sources of information I think about wildlife, virgin country, tribes, culture, variety... An altogether rosier picture. One day I will make it to Africa and I experience it first hand :-)
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Andy Eppy
Posted over 2 years ago
Do enough people, espescially children, know that we are living in an extinction event caused mostly by us?
I suggest that there is substantial doubt (doubt arising from the lack of evidence to the contrary) that we are living in an extinction event, and if we are, that it is caused mostly by us. Our inability to answer these questions directly correlates to the degree of understanding by the majority. 'If' these questions are answered affirmatively, let us hope that the time it takes to perfect our understanding of the dilemma does not leave us with insufficient time to remedy it, if indeed such a remedy is possible (too late of course for the 150 species per day that have perished in the meantime). Furthermore, I suggest that a decline in biodiversity of 150 species a day (whilst shocking to me), is not especially high when taken from a total perspective of the history of life on Earth. As I understand it there have been extinction events in the past which eradicated 98% of all life on Earth, and that all life today is descended from the 2% that made it. And yet we live in a world of unimaginable biodiversity, all descended from that meagre 2%. Nature finds a way to go on. Whether mankind will is of course another debate entirely, and for all manner of reasons aside from the 'messing in our own back yard' argument. In short I believe the assertion that we are living in an extinction event is disputable, and even more so that it is of our own making, and that the quoted decrease in biodiversity is in anyway linked to this asserted event. Such events have happened in the past of course, which were obviously not caused by us, and that being the case then, what arrogance is it of man's to believe that we are either a contributor to, or possess the power to avert such events when they occur?