Background These particles that are ‘on-the-mass-shell’ or ‘Linga’, that follow the Energy-Momentum relationship are ‘observable’ and also become observers participating in interactions (Karmana). Those that do not obey the Energy-Momentum relationship are said to be ‘off-the-shell’ and Virtual. Virtual particles are not observable. They are 'implied'. In a sense they do not exist independently. They are mathematical intermediate steps. We can consider them as our understanding ‘gap’ or a mathematical trick. Nevertheless they are extremely important in our understanding. Manas - The Virtual or Implied The root of ‘Manas’ is ‘Man’, which means ‘imagine’, ‘think’ etc.. Manas means something ‘tacit’ or ‘implied’. Manas are the Virtual particles or Implied particles, those that are ‘off-the-shell’ or not on linga. This is how it is used in the Vedas. When Upanishads tried to explain this Vedic ‘manas’, they could infer that manas is something virtual or implie