Funny thing about Poisson Processes: Every day you don't stake, you still have 100,000 days to go.
Here's a fun thing:
Pick a random point in time, then:
A) the average amount of time from that point to the next CLAM block is 1 minute
B) the average amount of time from that point to the previous CLAM block is also 1 minute
C) the average time between CLAM blocks is also 1 minute
Wouldn't you expect A + B = C? Yet A, B, and C are all 1 minute.
The error is in your final assertion, "Wouldn't you expect ...". No I wouldn't expect that. First, statements A and B don't make sense. The average amount of time from the chosen point in time is a singular number. You probably mean the average of a distribution of randomly chosen points. If you do mean that then A, B and C are all saying the same thing, because the occurrence of blocks is a poisson distributed random process. The time a block is created is as good a chosen time as any. Thus I would expect 1 minute = 1 minute = 1 minute.