Failure is a necessary part of the innovation process because from failure comes learning, iteration, adaptation, and the building of new conceptual and physical models through an iterative learning process.

FORBES: Creating An Innovation Culture: Accepting Failure is Necessary

"The deal is happening now rather than at launch because Spotify is going through the process of re-learning its business, " he said.

BBC: Deal done for Spotify downloads

Teaching-learning materials are designed to help facilitators to develop the reading and writing skills of their learners through a highly instructive teaching-learning process as well as guided practice by the learners (see pictures below).

UNESCO: Kha Ri Gude (Let Us Learn) Adult Literacy Programme (KGALP)