You absolutely should be proud, HM - what an exciting milestone! Thanks for telling us about it!

As for feeling out-of-place, if it's any consolation I'll add my voice to those who recognize that feeling. I regularly find myself reading about the accomplishments of other kids and thinking "Well that's clearly a different league from us." But then our DS4 will do something so unusual and striking, or we'll get feedback from someone very experienced with kids this age, and I'll think, "Hmm. Well maybe I'm not crazy after all." The thing is that each kid and each environment is so unique that it's incredibly difficult, for me at least, to know how one could even start to compare them. That's why it's probably very good advice not to try. What's exciting is to revel in the joy that these kids have in learning about new things, to cherish the glow you find in their eyes when something really clicks for them, and to give them the opportunity for those experiences as often as possible. Cultivate that joy, and every one of our kids will be well set up to take advantage of the plentiful gifts they have. There are other important aspects to parenting, of course, but this one seems pretty fundamental for kids like ours.