"... An expert's opinion is admissible to furnish the court with scientific information which is likely to be outside the experience and knowledge of a judge or jury. If on the proven facts a judge or jury can form their own conclusions without help then the opinion of an expert is unnecessary. …"
"Can I just say this, please? This was a normal day. I didn't expect what was going to happen, which happened. I didn't have knowledge of Mr Boakye holding a machete. This was a normal day, just another day. I was going to collect weed, and that is it."