So summing up that video. The minecraft world is 3,600,000,000,000,000m2. And so you would be able to build 7000 scale models of the earth and still have room. So, yeah. Minecraft it big...
Spoiler: When you at the "end" of the minecraft world, you may fall through blocks... Just use the /tp command
I played this one game called "The Scale of the Universe 2" and it shows the size of everything, from quarks to the Sloan wall. It says the Minecraft world is about the size of Uranus. No, really, the size of the planet Uranus.
So a minecraft world is 3,600,000,000,000,000m² which is 14,065,000,000,000 chunks. The average number of diamond ores per chunk is 3.097 so thats over 43,500,000,000,000 diamond ore per world. Diamond ore sells at 165r so that's worth 7,000,000,000,000,000r or almost 12,000,000,000 years of diamond support. And this is only on one server! So a minecraft world is 3,600,000,000,000,000m² each res is 3,600m² so there are a possibility of 1,000,000,000,000 reses on one server. The world population is about 7,000,000,000 so if every person on earth had diamond support and claimed all four reses there would still be 972,000,000,000 reses still open. If every person on earth had 34 alts (even Jack doesn't have 35 accounts) who are also diamond and they all claimed 4 reses there would still be 20,000,000,000 reses unclaimed. And this is only on one server!
So if a player was placed every ten chunks, based on the number of spawnable blocks, how many mobs would spawn in the first five minutes?
Well, if I could find some more info on the percentage of all naturally occurring blocks per chunk which can exist in one's inventory in the Overworld, Nether and End, and all items which naturally occur in randomly generated chests, I could easily out-mathematic you.
Owen made 100 sandwiches which she sold for exactly $100. She sold caviar sandwiches for $5.00 each, the bologna sandwiches for $2.00, and the liverwurst sandwiches for 10 cents. How many of each type of sandwich did she make?