A metric meter

Some milestones are easy to spot and can be planned in advance - such as birthdays. Others kind of sneak up on you. When grandma asked what size clothing the boys wear nowadays we pulled out the tape measure and, it turns out, Mathais is exactly 100 cm tall.

Fellow numbers-nerds rejoice! Mathias has tripled in length in 4 1/2 years. That's a compound monthly growth rate of 2%. If he keeps it up he'll be the youngest player in the NBA by age 8!