And that distance and knowing that amount of light is important because it's a little like you or I sitting around a campfire: You want to be close enough to the campfire so that you're warm, but not so close that you're too toasty and you get burned.
I saber la distància i la quantitat de llum és important, perquè és similar a quan vosaltres o jo seiem al voltant d'una foguera. Vols seure-hi a prop per estar calentet, però no tan a prop com perquè t'escalfis tant que acabis cremat.