Is communism a valid means of governance in the 21st century

[Uncertainty]

Hi there as a young communist a question that I am commonly asked is " How would communism work in the 21st century, as in the west we have almost completely replaced the traditional workers class with a (politically apathetic) semi-middle class." not knowing a lot about modern communist philosophy I sometimes wonder if following a 19th century philosophy (that as far as I know has not been revised since the fourth internationale under Trotsky but that is technically Trotskyism) is still suited to the technological advances made in the last 166 years since The Communist Manifesto was published. Sorry that was unnecessarily long. To put it simply I am wondering if there has been any revision of 19th century communism to accommodate for the changes of the last 166 years that still could be classed as communism.
I would be glad to hear any responses
Thanks
Uncertainty

[tuwix]

The great significance of middle class and especially the term semi-middle class is just bourgeois propaganda. So-called 'semi-middle class' doesn't exist. So-called 'semi-middle class' is another bourgeois description of workers' class - proletariat. And the problem was never lack of proletariat. As long capitalism exists as long there will be proletariat. The problem is proletariat's atomization. Deindustrialization caused the most of workers are no longer have job in big industry - big factories. Big factories were giving an opportunity to organize in unions in easy way.

But Marx's estimation of capitalism is incredibly still valid in 21st century. The workers are being still exploited by bourgeoisie. Capitalism is a system contradictory in its own activities. And it will collapse due to own contradictions. Marx discovered that crises of capitalism are cyclical. And another one may cause a collapse of it. And definitely it somewhen will.

[Uncertainty]

Thanks for clarifying that part of my question.
I am also wondering whether there has been any adaption for the Political and technological changes.
Because as you know the most advanced form of communication at the time was the semaphore tower and that the idea of a nation state still seemed completely foreign. Now we have a this very thing that we are talking on, the internet, and a rise in supranational corporations, as well as at least in Britain an the U.S.A a beginning of Orwellian surveillance.
So I ask again how has Communist philosophy adapted to tackle these issues that might have seemed inconceivable at the writing of the Manifesto.
Uncertainty