On Dec 18, 2015 2:13 AM, "sickpig@gmail.com" <sickpig@gmail.com> wrote:
> 1.75 x 0.5 + 1 x 0.5 = 1.375
>
> after six month. 
>
> An hard-fork on the others side would bring 1.75 since the activation, am I right?

Yes.

However, SW immediately gives a 1.75 capacity increase for anyone who adopts it, after the softfork, instantly. They don't need to wait for anyone else.

A hard fork is an orthogonal improvement, which is also needed if we don't want to be stuck with a constant maximum ultimately.

Hardforks can however only be deployed at a time when all full node software can reasonably have agreed to upgrade, while a softfork can be deployed much earlier.

They are independent improvements, and we need both. I am however of the opinion that hard forks need a much clearer consensus and much longer rollout timeframes to be safe (see my thread on the security of softforks).

-- 
Pieter