20210601, 14:05  #12 
"Viliam FurÃk"
Jul 2018
Martin, Slovakia
2^{4}×3×11 Posts 

20210601, 14:17  #13 
Romulan Interpreter
Jun 2011
Thailand
13×733 Posts 
Give me the time...
Last fiddled with by LaurV on 20210601 at 14:18 
20210603, 17:23  #14 
May 2018
2×109 Posts 
Actually, light travels about 18446 lightseconds in 2^{64} femtoseconds. That is less than a lightyear.

20210603, 20:59  #15 
"Rashid Naimi"
Oct 2015
Remote to Here/There
3771_{8} Posts 
Thank you very much for the correction
Code:
2^64*0.3 micrometers = 5534023222112865484.8 micrometers = 5534023222112.8654848 m = 5534023222.1128654848 km = 0.00058493005201488906931613994292358101681 ly 
20210603, 22:55  #16  
"Rashid Naimi"
Oct 2015
Remote to Here/There
13·157 Posts 
Quote:
Last fiddled with by retina on 20210603 at 22:58 Reason: Remove tracking code fron URL. You can do this yourself. 

20210605, 06:54  #17 
Jun 2003
Oxford, UK
3^{2}×5×43 Posts 
I feel confident that there are people who do the distance in a lifetime. But probably not most specimens of homo sapiens species.
People are encouraged to do 10,000 steps a day in the UK, and an average step is about 70 cm. Allowing for pre toddler days and bedridden days at the far end, a good mobile life (say the top 10%15% of the population) is 85 years in G20 countries. So a first approximation: 85*365.25*10000*0.7/1000 = 217,300 km in a lifetime The moon is Km 356,500 closest distance from the earth centre to centre, or approx. 348,400 km surface to surface. There will be fit pastoralists in Africa who achieve this, I am sure. Not so sure about us carobsessed people in the G20. Some will though. Last fiddled with by robert44444uk on 20210605 at 06:55 
20210607, 19:49  #18 
May 2018
2×109 Posts 
I recall the story of the grains of rice. The first square on the chessboard had 1 grain of rice, the second square had 2 grains, the third square had 4 grains, ..., the last square had 2^{63}=9223372036854775808 grains. In all, there were 2^{64}1=18446744073709551615 grains of rice. That might seem like a lot of rice, but there are more atoms in a single grain of rice than the number of grains of rice in that story.

20210607, 20:05  #19  
If I May
"Chris Halsall"
Sep 2002
Barbados
2^{2}·41·59 Posts 
Quote:
That's why AlphaGo was so impressive. And scary (for those who like humans). 

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