Dharma Questions: Miscellany — Part 4

This irregular “Dharma Questions” series deals with “dharma” meaning both the truth of the nature of reality and some Buddhist teachings. Amongst other things these questions can be:
• thought experiments
• borderline musings not meant to be answered
• from laziness of not contemplating or researching them yet

There’s 18 questions. Here’s two:

Why is truth not a perfection/Pāramitā in Mahayana?

Can (the whole cycle of the) 12 links of Dependent Origination go backwards due to retrocausality?