The final words about software estimationEven broken models can teach us something

@ziobrando

They may be right, sometimes

11 x 2 = …

“It’s only a couple of mines somewhere…”

Software development is a learning process

Working code is a side effect

Learning is crucial for our job, and yet we don’t

know much about it

Look inside!

Learning is non linear

(doesn’t fit into spreadsheets, burndown and Gantt charts)

Learn!

Can you estimate learning?

Value Stream Mapping

http://agile.dzone.com/books/continuous-delivery-free

Coding 20cl, learning 20cl, deciding 20cl, waiting...

Can you estimate waiting?

Deciding?

We suck at it

Should I marry her?

Yes No

Deadline!

...but can we stop afterthoughts?

SummaryRepeatable (boring) —> Pseudo-linear

Legacy —> Too guilty to accept the real numbers

Learning —> Non Linear

Deciding —> Deadlines & acceptable results

Waiting —> Remove coupling