I’m reading Our Mathematical Universe (2014), by Max Tegmark, and I’ll post about the book when I finish. However he got my attention early with the topic of eternal inflation. That got me thinking about how there are some key unanswered questions regarding the Big Bang and inflation of the non-eternal sort.
Inflation certainly does need some explaining. It may be related to dark energy, as both seem to do the same sort of thing (push space apart). The putative physics of inflation is bad enough; eternal inflation is (in my view) fairy tale physics.
For one thing, eternal? Seriously? Infinite something from nothing?
Lately I’ve been hearing a lot of talk about (philosophical) idealism. I qualify it as philosophical to distinguish it from casual meaning of optimistic. In philosophy, idealism is a metaphysical view about the nature of reality — one that I’ve always seen as in contrast to realism.
What caught my eye in all the talk was that I couldn’t always tell if people were speaking of epistemological or ontological idealism. I agree, of course, with the former — one way or another, it’s the common understanding — but I’m not a fan of the various flavors of ontological idealism.
It seems downright Ptolemaic to me.
How real is Sherlock Holmes, and what is the nature of his reality? On the one hand, Holmes is a fictional character from writer Sir Arthur Conan Doyle, but on the other there is a Canon of 56 short stories and four novels defining that character. It’s hard to deny at least some reality to something so well defined.
Others have extended the concept of Holmes far beyond the original in books, movies, TV shows, and more. The original texts are in the public domain, so there is considerable freedom to explore the idea of a crime-solving duo comprised of a brainy detective plus a faithful sidekick.
As a result Holmes has a well-defined center and very fuzzy boundaries!
In debates (or even just discussions) people sometimes ask how we know the physical world is really there. A variation asks how we know that what we perceive as the real world is the same as what other people perceive. (One example of this is the inverted spectrum.)
The most accurate answer is: We don’t. Not for sure, anyway. There is at least one assumption built in, but it’s one we have to make to escape our own minds. According to ancient philosophical tradition, the only fact we know for sure is that we ourselves exist. (Although I think there’s an argument to be made about a priori knowledge.)
But, as with the excluded middle, accepting reality as an axiom seems almost necessary if we’re to move forward in any useful way.
Two things collided. I saw Leon Wieseltier on The Colbert Report and was enthralled by his view of modern social life. That moved a friend of mine to look for other YouTube videos of Wieseltier. She posted a good one that then moved me to look at more. Bottom line, I ended up watching a fair bit of the man last week. Still enthralled.
Meanwhile, after my last post about religion and atheism, a reader commented that she found the article so balanced she couldn’t tell on which side I stood. As an agnostic, that’s the goal. Yet, in one of the videos, Wieseltier expresses an idea that really grabbed me.
It has to do with on which side of what line I stand.
I think, I think.
A bit more than three years ago I began this blog intending to write about matters of existence and consciousness (and science and computing). Since then I’ve tried on other hats, stories from my past and present, opinions and views about society, even the occasional post above movies or TV. But those meatier topics — the ones the blog is named for — still attract me.
There are three problems, though. Firstly, other sites specialize in that sort of thing and do it very well. Secondly, they aren’t topics that attract visitors — my meaty posts get even fewer reads than my less weighty posts. And thirdly, I may not be as good as explaining things as I would like to be.
That said, sometimes I just can’t help myself, so here we go again.