Some things are to do with physical strength and capabilties. He mows the lawn because his upper body strength means he can actually push it along without killing himself. He also does the electrical stuff because he has the diploma in electrical and electronic engineering. For the same reason he does the computer stuff.

However, we've both been a parent for exactly the same amount of time and in fact he's had more contact with babies and children than me, so how come, when the baby needs something other than food (the only job he physically can't do) it is me who has to assess what that need is, communicate it to him and then specifically ask him if 'he minds' taking care of it?

The lack of inequality in life works both ways and always will. A lot of it is to do with necessity, differences in brain physiology and biological programming. I am programmed so that I can't ignore the baby cry, I notice the second he stops and I can't think of anything but his needs when he is in distress. He is programmed not to be able to live without the home theatre system, therefore he knows how to hook it up to the TV!

OK, so I chose a trivial example but it's true.

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Fruit flies like a banana"

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