Comments by "Lawrence D’Oliveiro" (@lawrencedoliveiro9104) on "Science Time" channel.

  1. Every time I hear somebody try to play down the intelligence of the human species, I remember that it’s a member of the human species saying that.
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  2. But we were visited, not that long ago, by exactly such an emissary from another star, in the form of ’Oumuamua. If an undirected, uncontrolled body can make its way between stellar systems, why would a controlled one with an active propulsion system, under the control of an active intelligence, not be able to make the journey?
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  3. “The greatest tragedy in human history may have been the hijacking of morality by religion.” -- Arthur C Clarke
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  4. Given the age distribution of the stars in our galaxy, any other species we encounter would be overwhelmingly likely to be way more advanced than us. Not a few centuries more advanced and flying UFO-style spaceships like in those old movies of invaders from other planets, but millions or hundreds of millions of years more advanced, with technologies almost completely beyond our comprehension.
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  5. Don’t understand this “information system” thing. Remember most of the entropy on Earth comes from the Sun, and Mars gets a significant fraction of that, too.
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  6. Have you posted it online? Did anybody else see it?
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  7.  @GenuineUFOs6833  If it really was a huge craft, high up, lots of people should have seen it.
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  8.  @GenuineUFOs6833  It was probably smaller and closer than you thought.
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  9. Who says he “never looked at the sky himself”?
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  10. Most of the Earth’s surface is not controlled by the US Government. Aliens, if they exist, can land anywhere they choose.
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  11.  @Dodgevair  Any aliens would be so far in advance of our technology that no Government on Earth could cover them up, if they didn’t want to be covered up.
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  12.  @Dodgevair  You think they would have come all this way only to crash?
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  13. Nobody is allowed to grow things on Antarctica, but Mars would be fair game.
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  14. As Cox pointed out, even being limited to sublight speed, the entire galaxy could be colonized in a time on the order of ten million years. There’s been more than enough time for that.
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  15. Most of these religion myths only posit a single creation event, though.
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  16.  @jbbeiser983  But the science is pointing toward multiple big bangs.
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  17. You think aliens will not have Wal Mart?
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  18. Still, such structures would be large enough to be detectable across astronomical distances. They would be consuming a significant fraction of the energy from their stars, after all.
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  19. Religion ≠ logic.
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  20. There is the point that that expanding shell of easily-decoded radio and TV transmissions is no longer being added to as it used to. Most of our transmissions have moved to digital technologies with all kinds of compression and encryption. And the ability to work with less power. In short, the more efficiently we use the available bandwidth, the more our transmissions look like background noise. And the same would apply to aliens, who would likely be even further ahead on that curve.
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  21. So, you wouldn’t risk causing any “UFO sightings”, then?
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  22. 1:28 Inflation is a hypothesis to try to explain why the cosmic microwave background radiation isn’t lumpy enough. Inflation is built on two assumptions: * Something turned inflation on * Later on, something turned inflation off For the first assumption, we could say that the smoothness of the Universe itself is evidence that that happened. But as for the second assumption, there isn’t really any evidence for that. When and how did it turn off? The whole idea seems pretty arbitrary. But if inflation never turned off, then you end up with an infinite series of big bangs budding off other big bangs like yeast cells reproducing. An alternative explanation is that, instead of inflation, the Universe is smooth because it is older than the Big Bang. So, whichever way you look at it, the evidence seems to point quite clearly to the conclusion that the the Big Bang was not some once-off event.
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  23. Perpetual growth within a limited area possibly means extinction. But when you have an entire galaxy to populate, then over that time frame the very concept of species integrity, never mind social integrity, starts to lose meaning.
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  24. So where are they?
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  25.  @bonysminiatures3123  If they were more advanced than us, they would have no need to hide.
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  26. Latin.
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  27. Restriction to sublight speeds would not be a barrier, as Brian Cox pointed out.
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  28. So, no chance of accidental “UFO sightings”, then?
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