ideal sprint fallacy.
total days 10 , total hours(excluding breaks ) 8 hrs per day= 80 hrs per dev

code freeze day = day 8, testing+ fixing days : 8,9,10. release day : day 10
so ideal dev time = 7days/56 hr
meetings= - 1hr per day => 49 hrs per dev

- 1 day for planning i.e d1 . so dev time left . 6 days 42 hrs.
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all good planning. now here comes the messups

1. last release took some time. so planning could not happen on d1. all devs are waiting. . devtime = 5 days 35 hrs.

2. during planning:
mgr: hey devx what's the status on task 1?
d: i integrated mock apis. if server has made the apis, i will test them .
mgr : server says the apis are done. whats your guestimate for the task completion?
d : max 1-2 hrs?
m : cool. i assign you 4 hrs for this. now what about task 2?
d : task told to me is done and working . however sub mgr mentioned that a new screen will be added. so that will take time
m : no we probably won't be taking the screen. what's your giestimate?
d : a few more testing on existing features. maybe 1-2 hrs ?
m: cool
another 4 hrs for u. what about task 3?
d : <same story>
m : cool. another 4 hrs for u. so a total of 12 hrs out of 35 hrs? you must be relaxed this sprint.
d : yeah i guess.
m cool.
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timelines.
d1: wasted i previous sprint
d2 : sprint planning
d3 : 3+ hrs of meetings, apis for task 1 weren't available sub manager randomly decided that yes we can add another screen but didn't discussed. updates on all 3 tasks : no change in status
d4 : same story. dev apis starts failing so testing comes to halt.
d5 : apis for task1 available . task 3 got additional improvement points from mgr out of random. some prod issue happens which takes 4+ hrs. update on tasks : some more work done on task 3, task 1 and 2 remains same.
d6 : task1 apis are different from mocks. additionally 2 apis start breaking and its come to know thatgrs did not explain the task properly. finally after another 3+ hrs of discussion , we come to some conclusions and resolutions
d7 : prod issue again comes. 4+ hrs goes into it . task 2 and 3 are discussed for new screen additiona that can easily take 2+ days to be created . we agree tot ake 1 and drop 2nd task's changes i finish task 2 new screens in 6 hrs , hoping that finally everything will be fine.

d8 : prod issue again comes, and changes are requested in task 2 and 3

day 9 build finally goes to tester
day 10 first few bugs come with approval for some tasks
day 11(day 1 of new sprint) final build with fixes is shared. new bugs (unrelated to tasks. basically new features disguised as bugs) are raised . we reject and release the build.

day 2 sprint planning
mgr : hey dev x, u had only 12 hrs of work in your plate. why did the build got delayed?

🥲🫡