They're all right.
Past lives ignorants cause this life. And the arising ignorant is causing life as well.
If you can see the past lives, you will see yourselves when doing karma, both wholesome and unwholesome, with ignorant.
And if you see trillion times per second arising mind moments, you will see uncountable ignorant with unwholesome and switching in between vanished wholesome.
Why ignorant is at first
When unwholesome mind and mind-factors arise, many of them always or often arise together.
However, if the practitioner don't ignore at first whether "clinging on arising and vanishing realities is causing of suffering", they don't want to cling on anything, then all unwholesome minds can't arise.
Meditate Jhana-Mastery and see the arising and vanishing yourself to see the truth whether "we are clinging on only arising and vanishing trillion times per second", then you will see "how much we ignore entire lives".