rhyme or reason

The particular logic, sense, method, or meaning of a given situation, action, person, thing, group, etc. (Most often used in negative formations to indicate an absence or lack thereof.) Could someone please explain to me the rhyme or reason behind the program's selection process? I've looked over it several times, but there's no rhyme or reason to the agreement we were sent this morning.

Common Names:

Name	Pronounced	Usage
Yuuto	yoo:-to	Japanese
Dobrogost	daw-BRAW-gawst (Polish)	Polish (Rare), Medieval Slavic
Pamphilos	-	Ancient Greek
Ursula	UR-sə-lə (English), UR-syə-lə (English), OOR-soo-lah (Finnish)	English, Swedish, Norwegian, Danish, German, Dutch, Finnish, Late Roman
Jonette	-	English (Rare)
Luiza	luw-EE-zah (Polish)	Polish, Portuguese, Romanian