The incredible intelligence of one year olds

Something that actually happened to me:

I was sitting in my chair in the living room of my house, reading something, when I felt something tugging on my pants leg.

I looked down and saw that my one year old daughter had crawled across the floor and was tugging on my pants leg.

I guessed what she was trying to tell me, and carried her up to our bathroom and put her on the toilet, where she did her business.

What really impressed me:

At an age when she was still crawling along the floor, 

she was able to identify what was happening to her, 

identify what she needed, 
and identify how to achieve that, by tugging on my pants leg.

The intelligence of one year olds!

She didn't need any "toilet training".

She just, I infer, observed what her parents did and and felt the need to emulate that.

This was just something she, not yet able to walk or talk, did on her own.

I was so impressed.

Kudos to her!