Spent almost a month writing real time sync between two platforms for client. Changed it n times to fit their custom conditions. They tested it for real time sync.
Now suddenly their requirement is to have scheduled sync and it is "As we discussed in the beginning".

I wish we developed like the actual engineering sector.

Want to build a boat? Great! Halfway through the build and you want to change a bunch of things? That'll cost ya!

Imagine for every change, you could charge the customer $1000. Even the smallest change.

Customers would get what they asked for, in the time they wanted, and at the price they wanted.

Scope creep is such a bitch.