The proper time (that is, the time the traveler measures on a clock) goes to zero very quickly towards the end. Even with both axes plotted logarithmically, it's just a sudden drop at the end towards light speed.

- [pic](https://home.davidgoffredo.com/hackernews/proper-time-one-li...)

- [plot](https://home.davidgoffredo.com/hackernews/proper-time-one-li...)

Links seem to be broken?

No, but IPv6 only these days. I never set up dynamic DNS.

Can you explain for dummies how... a normal person with a normal web browser should access this?

Have an IPv6 connection.

So basically "go fuck yourself" if your ISP does not yet support IPv6?

I'm not saying that I couldn't fire up Cloudflare Warp, but I think it's a legit issue for average users [0]?

[0] https://xkcd.com/2501/

Funnily enough, I use Cloudflare Warp at work, and it breaks my site for what I think are DNS related reasons. Maybe there are some more exotic DNS keys that I need to add.

Or I could go back to IPv4 with dynamic DNS, but that would mean changing domain registrars.

NS record for domains usually can be pointed at someone else than the registrar it's on, just fine(unless DNS infra of either one or both goes down). That's entirely separate to registrar transfer.

Still can switch isp usually

Enable ipv6

Not an option for me. I have a residential ISP that gives me symmetrical gigabit fiber, but has no support for IPv6.

I don't see any AAAA record for your domain.

Interesting

    david@carbon12:~ $ dig +short AAAA home.davidgoffredo.com
    2603:7000:5101:de1c::cafe:babe

I'll have to look into it, thanks for the QA testing everyone.

I am on IPv6 and I cannot access your site.

ftfy

pic: http://numpad0.com/imgs/home.davidgoffredo.com/proper-time-o...

plot: http://numpad0.com/imgs/home.davidgoffredo.com/proper-time-o...

One million seconds is 11 days, a billion seconds is 31 years.

Thanks! But same here imho:

              1,000 seconds =          ~0.01 days (~17 min)
          1,000,000 seconds =         ~11.57 days (~12 days) 
      1,000,000,000 seconds =     ~11,574.07 days (~32 years)
  1,000,000,000,000 seconds = ~11,574,074.07 days (~32k years)

It all seems quite logical once you put everything into the same unit, I think.

Maybe it's just our human calendar/time unit rollercoaster (60*60*24*30*12) that's playing tricks on us here.

Of course it is logical, we are not discussing the math.

But it isn't intuitive, you're not used to numbers that big or that grow that fast.

Few things go from a million to a billion, especially when related to time.

It’s the units that make it seem unintuitive. 12 days is roughly 0.032 years, and 17 minutes is likewise 0.000032 years. It’s relative to how we were taught to view smaller lengths of time. Of course you could argue measuring time by the rotation of heavenly bodies is more intuitive than counting on your fingers for the hours in a day and days in a lunar cycle.

Going from a million to a billion isn't some special relationship. It's just * 1000. It's the same as going 11000 or 101000.

I find it frustrating that people seem to think that someone going from 1M to 1B is somehow different to other numerical operations. It's not. It's 1000 times bigger, it's not a huge deal.

And any exponential growth is also a multiplication, it's not a big deal, just giving example on what they asked before.

Somehow people are interpreting this as some kind of math trick.

It's not a trick, our brains are not wire to deal with numbers growing quickly, but we do understand the math.

Only abstractly. If you are living in the process, it is hard and very few people live that.

Which process, though? Every human alive easily went from millions of cells to billions of cells to trillions of cells.