In Jain tradition, the loss of the 14 Pūrvas is understood as a gradual, karmic decline, not just a “mistake” of not writing them down.

Very simply:

1. Everything was preserved by memory, not writing

- In early times, Jain monks did not keep written scriptures. - They followed aparigraha (non‑possession) very strictly, so even books were seen as a kind of possession. - The Āgams and Pūrvas were passed orally from guru to disciple by memorisation.

1. The 14 Pūrvas were extremely deep and difficult

- They contained very vast, subtle knowledge (especially about karma, cosmology, spiritual stages). - Only very highly advanced monks (śruta-kevalī, like Ācārya Bhadrabāhu) could fully grasp and retain them. - Because they were so hard, fewer and fewer monks could truly master them.

1. Famine, migration and division made preservation weaker

- A great famine and movement of monks (north–south, etc.) disturbed the line of teacher–disciple transmission. - According to tradition, Bhadrabāhu Svāmī was the last to know all 14 Pūrvas. - He taught only 10 Pūrvas to Sthūlabhadra; the last 4 he did not pass on, as the spiritual capacity and discipline he expected were not fully met. - After that, the full chain of transmission was broken.

1. By the time writing started, the Pūrvas were already gone

- Councils like Pāṭaliputra and later Vallabhi tried to collect and fix the Āgams. - When they finally decided to write down what was left, the 12th Aṅga (Dṛṣṭivāda) and with it the 14 Pūrvas were already lost in both Śvetāmbara and Digambara traditions. - So, what was never written and was already forgotten cannot now be recovered – that is why the loss is said to be irreversible.

1. Jain view: this loss is part of time‑cycle (kālacakra)

- We are in a declining half‑cycle (avasarpiṇī). - In such times, according to Jain Dharma, spiritual strength, memory, and scriptural preservation naturally deteriorate. - Loss of the Pūrvas is seen as one expression of this karmic decline, not just a human error.

So, the Pūrvas weren’t “not written” by accident; they were kept orally on principle, entrusted to a very few, and then faded away due to weakened spiritual capacity, historical disturbances, and the natural decline of this era. That is why today both Digambar and Śvetāmbara accept that the 14 Pūrvas are fully lost.

You can read a simple overview of the 14 Pūrvas and the monks who knew them here