tour: rand.Seed suggestion does not work

[golang]

tour: rand.Seed suggestion does not work

[adg]

We should probably mention that you need to seed it with something that is not the time. The time is always the same in the playground.

[humblec]

This is not good :( , it confuse lots of people. If the time is kept constant, it has to be notified somehow to an end user or at least when they use "time" package in playground.

[adg]

From the page you linked:

Note: the environment in which these programs are executed is deterministic, so each time you run the example program rand.Intn will return the same number. (To see a different number, seed the number generator; see rand.Seed.)

[robphoenix]

https://go-review.googlesource.com/c/44931/ @adg