2+2=5 is not a sin, it is an error.
Pesky facts getting in the way all the time.
Matthew 22:29 Jesus answered and said unto them, Ye do err, not knowing the scriptures, nor the power of God.
Jeremiah 23:13 And in prophets of Samaria I have seen folly, They have prophesied by Baal, And cause my people -- Israel -- to err.
Pesky scripture getting in the way of Catholics all the time.
Say 5 Hail Marys and sin no more.