¿Qué significa la expresión: It is food for thought?

La frase del día es:

• All of this - that we have discussed so far - is nothing but food for thought

¿Qué significa?

• Hace referencia a cosas o ideas para pensar.

Ejemplos:

• Yes, your ideas have certainly given me food for thought 
• There is much food for thought in this report for us to digest. 
• The sections of this chapter present some food for thought and paths for the action. 
• It also provides food for thought for future discussion. I would like to offer some food for thought.

Fuentes:

• Word Reference: Food for thought
• Linguee: Food fot thought