The left side, 糸 (thread), clearly indicates the actions of knitting, braiding, or compiling threads of information. The right side, 扁, contributes the On'yomi "へん" and originally referred to something flat or thin, hinting at woven or compiled forms.
Imagine the 糸 (thread) radical on the left actively working, twisting and turning the 'flat' (扁) right side to knit or compile it into a finished whole. This kanji is all about putting things together, whether physical threads or abstract ideas.