My own description of dream investment is that if it will have a high passive income that is enough to sustain my needs, wants and add up to savings. Which means that I no longer need to work because my investment provides everything. Financial stability is sustained through this and it will be a dream because it is where I can just relax and enjoy life with my family while still earning. And also the security for my family is there.
Human nature intends to get as much money as they can managed to earn by any means. There are so many people who are dreaming about the future like us. Nothing is impossible in this world and you have to keep your dreams alive along the path. If your needs are catered, you have enough money portioned for savings, then nothing is better than dreaming. Keep it through.
Too much philosophy from you bro. Instead of that you can give any investment option or suggestion to him. Mining farm investment takes huge amount and that is completely depends which GPU cards are choosing or which ASIC miner you gonna use to mine bitcoin or altcoin.
If you can get the free electricity go with antminer s9 miners to start mini farm initially else still you want to mine bitcoin you can go to solar mining to mine with free electricity.