april first

i don't hear the ward "april fool" in these days.
when i was a child, i would say a lie that is not serious
to my friends or family.
this custom is nothing ? in japan only?

i am reading the book, which say about brain in our heads, now.
it is very interesting for me.
my principle was upsetted, as if the earth goes round the sun or
the sun goes round the earth.
that's a bit exaggerated though :)

you should understand the work of brain. and you maybe know new world.