Pre-production: Special Effects

As a note, special effects will not be used in my film. Although sci-fi films today heavily rely on the use of software and technology that can be used both in the production and post-production of a film, it will not be possible for me to shoot and edit with this in mind mainly because my budget is just too small. Moreover I do not have access to technology that is capable of creating something that will boost the verisimilitude of my film and it's effectiveness.