I'm a product manager. Deadlines are 100% my responsibility and I would never blame an engineer for missing one. If someone on my team misses a deadline it mea

I'm a product manager. Deadlines are 100% my responsibility and I would never blame an engineer for missing one. If someone on my team misses a deadline it means that I wasn't able to predict the level of effort properly. It means I changed the spec too much and caused chaos. It means I didn't communicate with the engineer well enough to chart out their progress and anticipate the delivery date. It means I wasn't keeping a close enough eye. It means I didn't parallelize the task properly.