這一天，老大我去課後班那裏，接到了小衝浪。。。
剛上車，我們都還在係安全帶，。。。
小衝浪就很開心地跟老大我說，“I know two reasons why people don't feel the earth is a sphere.”
“OK.”老大我回應，聽他繼續說。。。
“First, the earth's surface only curves slightly so that people don't feel the ground is curving.”他說。
“Good.”我們倆都係好了安全帶，老大我一邊啟動了車，一邊補充說，“That's because the earth's radius or diameter is _huge_.”
“Second, when people look far at the horizon, they can't see a circle.”他又說。
“Well, we live in a valley.”老大我說，“When we look around, we can see the mountains and their mountain tops dominate the skyline. What do people see on a boat in the sea or ocean?”
“People cannot see that far. They will need telescopes to see far.”小衝浪想了想，說。
“OK.”老大我說，一邊開車，一邊心想，也許是時候該帶他去坐船出海了？
******
“Dad,”在車上過了一會兒，小衝浪又很開心地跟老大我說，“I'm smart, right？”
“Yeah.”老大我給了一個肯定的回答，淡市，沒有太熱烈響應，有點擔心小盆友翹尾巴。。。
“I knew you'd agree!”小衝浪很興奮地說，“I think my IQ is 100!”
“You think the IQ of 100 means very smart?”老大我忍住笑，問他。。。
“Of course!”小衝浪自信的話音很有感染力。。。
老大我忍住笑，沒有再說什麽。。。
或許，他以為老大我被他說服了吧，他也沒有再說什麽。。。
2025.9
