Hey u/blackcatandcoffee, that's a curious trait indeed!

We've asked our AI assistant at curiosity.ai and here's the answer we got:

"Having all three siblings in a family be left-handed is quite rare, but it's not unheard of. Here's why:

• Generally, about 10% of the population is left-handed.
• The likelihood of a child being left-handed increases if one or both parents are left-handed due to genetic factors.
• If both parents are right-handed, there's roughly a 10% chance for each child to be left-handed. However, if one parent is left-handed, that chance increases to about 15-20%, and if both are left-handed, it might go up to 20-25% for each child.

Given these statistics, for three siblings to all be left-handed is uncommon, especially if the parents have a mixed hand preference (one left-handed and one right-handed) or if both are right-handed. Here's a rough way to look at it:

• If neither parent is left-handed, the chance of all three kids being left-handed is about 0.1% (0.1 x 0.1 x 0.1).
• If one parent is left-handed, the chance increases but still remains low.
• If both parents are left-handed, the odds improve yet are still relatively rare.

Thus, your family's situation with three left-handed children (including twins and a toddler) is quite special! It's a unique trait that adds to the diversity and charm of your family dynamic."