plan_generate_agent/prompt.py question

[AaronWangCN]

plan_generate_agent/prompt.py:
system prompt:".....
SUBTASK HANDLE:
A task-handling agent will handle all the subtasks as the inorder-traversal. For example:

1. it will handle subtask 1 first.
2. if solved, handle subtask 2. If failed, split subtask 1 as subtask 1.1 1.2 1.3... Then handle subtask 1.1 1.2 1.3...
   "

if subtask2 failed,split substack1, why not split substack2 ?