New Approach

found in GURPS Psionic Powers in multiple locations, approximating the effects of the Decreased Immunity enhancement.
*pg 59 for Telereceive (Mind Probe + Mind Reading)
*pg 62 for Possession with Mind Swap
*pg 64 for Possession with Telecontrol
*pg 65 for Instill Fear (Terror) (which is weird because Terror isn't supposed to have inherent immunity, only unaffected by 1 hour
==Implications==
P64 "cannot try to Telecontrol the subject again without using the New Approach psi technique" illustrates how using an ability which gives "permanent immunity" works if you later change the ability so that it no longer imparts permanent immunity:
*any previously given permanent immunities NO LONGER APPLY
So you are not actually giving an advantage like Resistant to foes: this is PURELY one-sided on the user and they are able to remove it.
Over time this should actually lower ability value (accessibility : X) like if you tried it and failed on EVERYONE, it would be usable on NOONE.
This indicates though that you don't need to buy off Accessibility: all but one (-80%) or similar, just buy Decreased Immunity and any problems accrued will go away
==Previous thinking==
Without the New Approach example, people might assume that endowed immunity would persist even after the ability was enhanced
Category:Psionics