Thank you for the explanations.  I also received a helpful note off list, 
put here for posterity:


--------------------------

Correct! ;-)
---

Aha, I have no way of finding out whether a channel is ready to proceed 
>> without actually proceeding or blocking.
>>
>> On xxxxx wrote:
>>
>>> On xxxxx wrote:
>>>
>>> > While I understand just fine how to use select/goroutines/channels, 
>>> the overarching importance of select as a built-in feature is escaping 
>>> me.
>>>
>>> I suggest a thought experiment. You understand just fine how to use the 
>>> select statement, so maybe try to imagine how are you'd code some task, 
>>> where you use normally use select, _without_ it. What'll be the [most 
>>> important] difference?
>>> -- 
>>>
>>> -j
>>>
>>

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