What should I look for to notice inconstancy within the spheres of boundless space and consciousness, respectively? I've had access to these states for about a month, and I've only decided to try vipassana-izing them today. This is nothing I can't figure out on my own with enough work, but a few pointers might save me some time.
Secondary question:
The MCTB chapter on the 6th jhana mentions that the 6th jhana "is also a great staging ground for exploration of the 'psychic powers.'" In the last Google Hangout, I asked Daniel which jhana was best for cultivating siddhis and he recommended the 4th. Does anyone here have experience cultivating siddhis using the 4th vs. 6th jhanas?
Tertiary question:
Is siddhic visualization the best supranormal/concentration-dependent technique for supercharging insight practice? Once I hit the next path, I hope to use intense concentration on retreat as a 'force multiplier' for insight.
Thank you in advance for your help.