Surprisingly prob yes

But still we are much better at estimating complexity

Time estimations usually tends to be overly optimistic. I don’t know why. Maybe the desire to please the PO. Or the fact that we never seem to take into account factors such as having a bad day, interruptions, context switch.

T-shirt sizes or even story points are way more effective.

The PO can later translate it to time after the team reaches certain velocity.

I have been developing software for over twenty years, I still suck at giving time estimates.