My post wasn't as silly as you think, lemongrove because, while you cannot change an actual government while it is in power, people can have an influence on legislation through lobbying, responding to consultations, protesting and even initiating legal challenges.
Governments always have an Opposition which can propose and carry amendments to legislation if they can demonstrate that their amendment is sensible or that it is likely to alienate not only their voters, but also the government's voters, if it isn't carried. Any government wants to be returned for a further term and is conscious that if its legislation is too unpopular it is likely to lose them votes. at the next general election.
There is nothing straightforward, or set in stone, about governance.