Spells (like the MoF Combustion) or creatures (Fire Elemental) that have the ability to set characters on fire specifically say so in the description, and give the mechanism for avoiding catching on fire.
Since neither Fireball nor Burning Hands do either of the above...
I've always been confused as to exactly why "Burning Hands" is a transmutation spell as well... I've just kind of taken it as a given... and considered that it might just be a Transmution spell for BALANCE issues.
I mean, 1st level evocation already has Magic Missle... they might have just made it transmutation to give Transmuters a good 1st level combat spell.
What I rule is that however you cast it, since it is a transmutation spell, it changes your hands from normal objects to burning objects. Casting it Silenced and Stilled with your hands in your pockets is NOT a smart thing to do
